TweetFollow Us on Twitter

Talking to Your Home Volume Number: 16 (2000)
Issue Number: 11
Column Tag: Home Automation

Talking to Your Home

By Bruce Lawton

Introduction

The futuristic world of talking to your home to operate everything in it is here now! Well, how many times have we heard claims like that? The truth is: for some it really is here now; for others, it is not quite ready yet. Speech recognition technology is delivering some amazing results already and it is just getting better as the computers get faster and the recognition software continues to improve.

To make it happen, we'll be talking about voice commands, microphone(s), a Power Macintosh, software, X-10 home automation hardware and your existing lamps, appliances and other gadgets. This discussion assumes you're already familiar with general X-10 home automation. If not, check out the June 2000 issue of MacTech.

Why You Might Want to Use Voice Commands

The most useful application for speech recognition is for persons wanting to overcome a physical handicap. With limited mobility or limited dexterity, speech recognition enables someone to operate lamps, appliances and home entertainment units that would otherwise be difficult or impossible to operate. In this way, the quality of life can be greatly improved, giving the person a bit more independence.

For those who are not physically limited, operating the home by voice can be a matter of convenience or just plain fun. How many times have you settled into bed and then realized (perhaps with a little helpful reminder from your dear significant other) that some lights were left on? The easiest thing to do is to say "Turn off all lights."

It is also impressive to show your PC friends what your Macintosh will do in response to your voice commands. There's nothing quite like seeing everyday hardware operated by voice.


Figure 1. From voice to lamp.

Setting up the Microphone(s)

To get started, you must first plan how you're going to get your voice to your Macintosh. There are at least three ways to do it. The most inexpensive microphone configuration is the standard PlainTalk, corded microphone connected directly to your Mac. The obvious drawback is that the cord restricts the distance you can go from your Mac while issuing voice commands. In some situations, this may be adequate.

The most cost-effective approach giving you more range is to use a wireless microphone that transmits your voice as your own personal FM radio station. Then you have a small FM radio connected to your Mac to feed the sound in. The range on the microphone should enable operation from anywhere in a normal-sized home. My own experience is that the Pro.2 microphone from Lotus Productions ( www.lotusproductions.com, (800) 211-3778 ) works well and costs around $45. A small $25 radio from Radio Shack will receive the FM signal and should be connected to either your A/V Mac's RCA input jacks or directly to the PlainTalk mic jack using a standard 3.5 mm stereo plug as shown below. The PlainTalk jack is really a stereo line-level input. The extra length of the plug allows the Mac to supply power to the tip which is then used by circuitry in the PlainTalk mic. The normal 3.5 mm stereo plug doesn't use that available power. The headphone jack of the radio provides an audio signal compatible with the PlainTalk mic input. Make sure you adjust the radio headset volume to get the clearest sound with no clipping.


Figure 2. FM microphone and radio.

The deluxe approach is to use in-wall microphones and a mixer. This costs the most, but can give you completely hands-free voice control from any room. There is a fair amount of experience in the comp.home.automation newsgroup from those who have set this up on Windows. It can work well, though I must admit I haven't done this myself — my own home has far too much "noise". Wired microphones can be great for a home with one or maybe two people living there, but may not work well with several people. The Mac's PlainTalk can get confused if it is listening to many voices at once. When using in-wall microphones, each mic has a cable that is run back to the mixer, which is presumably near the Mac. The audio output from the mixer is then connected to the Mac's sound input. Similar to the FM radio configuration, you can feed the line-level signal either into your A/V Mac's RCA input jacks or directly into the PlainTalk mic jack using a standard 3.5 mm stereo plug.

Shure (www.shure.com, (847) 866-2200) makes the SCM-410 and SCM-810 mixers with 4 and 8 inputs respectively. They dynamically cut out the microphones that are not being used, improving the audio quality for the microphone you're speaking to. They cost $800 and $1,200 at iAutomate ( www.iAutomate.com, (800) 741-6790 ). HomeVoice also makes a mixer, sold as part of their "Multiroom Processor Kit" at SmartHome (www.smarthome.com, (800) 762-7846) for $690. Good, compatible, in-wall microphones vary greatly in price, from $70 to $250 or more. One of the most recommended models is the Crown PZM-11, sold at iAutomate and SmartHome.


Figure 3. In-wall microphones with a mixer.

The Software

For our purposes, there are two categories of speech recognition software: dictation and discrete commands. IBM's ViaVoice is an excellent way to get your speech dictation into the Macintosh, but the resulting stream of words is not "understood" by the ViaVoice software. That is, it doesn't know what action you want taken in response to the words. Dictation software is intended as an alternate method of text input — it is not going to help you operate your X-10 system. This is where you want software that understands discrete commands. PlainTalk is at the heart of this type of speech recognition. As it has steadily improved over the years and CPU's have sped up, the reliability has become quite good. The Thinking Home application uses PlainTalk to make your X-10 devices available. First, install PlainTalk. This is done via a "Custom" installation from your MacOS CD or it can be downloaded from Apple's web site at <http://www.apple.com/macos/speech/>. Next, ensure you have checked the "Respond to Voice Commands" checkbox in the Preferences as seen in Figure 4.


Figure 4. Enabling speech commands.

You need to have a device named "Bedroom Lamp" like the example of Figure 5. Now you can say "Turn off the bedroom lamp." and Thinking Home will do the right thing.


Figure 5. Your device names are used by PlainTalk.

Syntax of What You Say to Make it Work

In order to operate a device using Thinking Home, you speak a normal sentence, with the action followed by the device name. For example, "Turn off the bedroom lamp." or "Set the thermostat to heat." The precise syntax is shown here in Backus-Naur Form notation:

<voice-command>   ::= <action> <device-name> |
        "What is the status of the> <device-name> |
      "Set the" <thermostat-name> "to" <mode>
<action>   ::= "Turn on" | "Turn off" | "Dim" | "Brighten"
<device-name>   ::= the device name used in the Thinking Home document
<thermostat-name>::= <device-name> | "thermostat"
<mode>   ::= "Heat" | "Cool" | "Off"

More examples:

  • Turn on the bedroom lamp.
  • Turn off the kitchen light.
  • Dim the theater lights. — will be dimmed by 35%
  • Brighten the bedroom lamp. — for a gentle start in the morning.
  • Set the thermostat to cool.
  • What is the status of the sidewalk lights?

Note that the thermostat can be referred to by the name you gave it, like any other device. Or you can refer to it simply as "thermostat" and Thinking Home will use the first thermostat it finds in any open document.

There are some caveats to asking for the status of a device. First of all, the Mac will speak the reply and you may not be at your Macintosh if you are using the wireless mic or mics installed in each room. The other issue is the accuracy of the status. This will depend on whether the X-10 module is able to report its status. Two-way device modules ($25+) will report their status, but the most common modules that sell for $4 to $12 do not. If you're using an ActiveHome CM-11A computer interface, it will keep track of X-10 commands observed on your home wiring and will report the status of the lamp. This assumes you have not operated it manually. The report from a two-way lamp module would reflect its actual state, including manual operation.

You can also control your X-10 thermostat by saying "Set the thermostat to cool." The choices for thermostat modes are cool, heat and off. Unfortunately, you cannot say "Set the thermostat to 72 degrees." This is one place where PlainTalk is not quite ready. Recognizing spoken numbers is much more difficult than most other speech.

Speakable Items (installed with PlainTalk) is another way to access some of Thinking Home's functionality via speech. For example, you may want to know the time of sunset on a regular basis. By making a Speakable Item like the example below, you can say to your Macintosh "When is sunset?" and the Speakable Items application will run the the AppleScript by that name. The AppleScript can, in turn, tell Thinking Home to speak the time of today's sunset as seen here in Figure 6.


Figure 6. Using Speakable Items to get the time of sunset.

This is also how you can get XTension v3.0 (from Sand Hill Engineering) to respond to your voice. Although XTension does not have built-in support for PlainTalk, it does have excellent support for AppleScript. You can use Speakable Items for speech recognition and make an AppleScript for each command you want recognized. Your scripts in the Speakable Items folder will tell XTension which X-10 device to operate. For example, to get the time of sunset, you'd write a script almost exactly as that for Thinking Home.


Figure 7. XTension Speakable Item for getting the time of sunset.

To use XTension to operate devices via speech, you create an AppleScript like that in Figure 8 and name it as you intend to speak it. Like before, you name this script "Turn off the bedroom lamp". You'll also need to make a similar one for "Turn on the bedroom lamp."


Figure 8. XTension Speakable Item for operation of a device.

To get device status using XTension, you write an AppleScript similar to that shown in Figure 9.


Figure 9. XTension Speakable Item for getting the status of a device.

Tips

Since faster CPU's seem to perform better than slower ones, you will probably want to avoid using a Power Macintosh running less than 100 MHz.

The Shure web site has a wealth of useful information and general advice regarding the various options, such as ceiling- vs. wall-mounted microphones. <http://www.shure.com/support/technotes/app-soundcard.html#Macintosh>

Before you demo your cool home to others, test it out in advance. In particular, check that it works reliably from all locations you plan to be when showing it. When using a wireless microphone, ensure the range is sufficient to operate consistently from all locations where you will be using it. Also, make sure the ambient sounds are the same. Putting on background music just as your guests arrive will change the "noise" level and your speech commands may very well get lost. Once you have it set up nicely, your friends will be amazed.

Conclusion

Integrating speech recognition into your Macintosh X-10 home automation can be useful, convenient and fun. This futuristic technology is ready and affordable today and still improving. Select an arrangement that fits your lifestyle and budget and try it out.

Links


Bruce Lawton is still an enthusiastic Macintosh developer who first got hooked over 15 years ago. He can be reached at bruce@alwaysthinking.com.

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

Tunnelblick 3.7.3 - GUI for OpenVPN.
Tunnelblick is a free, open source graphic user interface for OpenVPN on OS X. It provides easy control of OpenVPN client and/or server connections. It comes as a ready-to-use application with all... Read more
Opera 48.0.2685.50 - High-performance We...
Opera is a fast and secure browser trusted by millions of users. With the intuitive interface, Speed Dial and visual bookmarks for organizing favorite sites, news feature with fresh, relevant content... Read more
Tor Browser Bundle 7.0.7 - Anonymize Web...
The Tor Browser Bundle is an easy-to-use portable package of Tor, Vidalia, Torbutton, and a Firefox fork preconfigured to work together out of the box. It contains a modified copy of Firefox that... Read more
FotoMagico 5.5 - Powerful slideshow crea...
FotoMagico lets you create professional slideshows from your photos and music with just a few, simple mouse clicks. It sports a very clean and intuitive yet powerful user interface. High image... Read more
Adobe Audition CC 2018 11.0.0 - Professi...
Audition CC 2018 is available as part of Adobe Creative Cloud for as little as $19.99/month (or $9.99/month if you're a previous Audition customer). Adobe Audition CC 2018 empowers you to create and... Read more
Alfred 3.5.1 - Quick launcher for apps a...
Alfred is an award-winning productivity application for OS X. Alfred saves you time when you search for files online or on your Mac. Be more productive with hotkeys, keywords, and file actions at... Read more
AirRadar 4.0 - $9.95
With AirRadar, scanning for wireless networks is now easier and more personalized! It allows you to scan for open networks and tag them as favourites or filter them out. View detailed network... Read more
DEVONthink Pro 2.9.16 - Knowledge base,...
Save 10% with our exclusive coupon code: MACUPDATE10 DEVONthink Pro is your essential assistant for today's world, where almost everything is digital. From shopping receipts to important research... Read more
ForkLift 3.0.8 Beta - Powerful file mana...
ForkLift is a powerful file manager and ferociously fast FTP client clothed in a clean and versatile UI that offers the combination of absolute simplicity and raw power expected from a well-executed... Read more
Data Rescue 5.0.1 - Powerful hard drive...
Data Rescue’s new and improved features let you scan, search, and recover your files faster than ever before. We have modernized the file-preview capabilities, added new files types to the recovery... Read more

Wheels of Aurelia (Games)
Wheels of Aurelia 1.0.1 Device: iOS Universal Category: Games Price: $3.99, Version: 1.0.1 (iTunes) Description: | Read more »
Halcyon 6: Starbase Commander guide - ti...
Halcyon 6 is a well-loved indie RPG with stellar tactical combat and some pretty good writing, too. It's now landed on the App Store, so mobile fans, if you're itching for a good intergalactic adventure, here's your game. Being a strategy RPG, the... | Read more »
Game of Thrones: Conquest guide - how to...
Fans of base building games might be excited to know that yet another entry in the genre has materialized - Game of Thrones: Conquest. Yes, you can now join the many kingdoms of the famed book series, or create your own, as you try to conquer... | Read more »
Halcyon 6: Starbase Commander (Games)
Halcyon 6: Starbase Commander 1.4.2.0 Device: iOS Universal Category: Games Price: $6.99, Version: 1.4.2.0 (iTunes) Description: An epic space strategy RPG with base building, deep tactical combat, crew management, alien diplomacy,... | Read more »
Legacy of Discord celebrates its 1 year...
It’s been a thrilling first year for fans of Legacy of Discord, the stunning PvP dungeon-crawling ARPG from YOOZOO Games, and now it’s time to celebrate the game’s first anniversary. The developers are amping up the festivities with some exciting... | Read more »
3 reasons to play Thunder Armada - the n...
The bygone days of the Battleship board game might have past, but naval combat simulators still find an audience on mobile. Thunder Armada is Chinese developer Chyogames latest entry into the genre, drawing inspiration from the explosive exchanges... | Read more »
Experience a full 3D fantasy MMORPG, as...
Those hoping to sink their teeth into a meaty hack and slash RPG that encourages you to fight with others might want to check out EZFun’s new Eternity Guardians. Available to download for iOS and Android, Eternity Guardians is an MMORPG that lets... | Read more »
Warhammer Quest 2 (Games)
Warhammer Quest 2 1.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0 (iTunes) Description: Dungeon adventures in the Warhammer World are back! | Read more »
4 of the best Halloween updates for mobi...
Halloween is certainly one of our favorite times for mobile game updates. Many popular titles celebrate this spooky season with fun festivities that can stretch from one week to even the whole month. As we draw closer and closer to Halloween, we'... | Read more »
Fire Rides guide - how to swing to succe...
It's another day, which means another Voodoo game has come to glue our hands to our mobile phones. Yes, it's been an especially prolific month for this particular mobile publisher, but we're certainly not complaining. Fire Rides is yet another... | Read more »

Price Scanner via MacPrices.net

Apple restocks full line of refurbished 13″ M...
Apple has restocked a full line of Apple Certified Refurbished 2017 13″ MacBook Pros for $200-$300 off MSRP. A standard Apple one-year warranty is included with each MacBook, and shipping is free.... Read more
13″ 3.1GHz/256GB MacBook Pro on sale for $167...
Amazon has the 2017 13″ 3.1GHz/256GB Space Gray MacBook Pro on sale today for $121 off MSRP including free shipping: – 13″ 3.1GHz/256GB Space Gray MacBook Pro (MPXV2LL/A): $1678 $121 off MSRP Keep an... Read more
13″ MacBook Pros on sale for up to $120 off M...
B&H Photo has 2017 13″ MacBook Pros in stock today and on sale for up to $120 off MSRP, each including free shipping plus NY & NJ sales tax only: – 13-inch 2.3GHz/128GB Space Gray MacBook... Read more
15″ MacBook Pros on sale for up to $200 off M...
B&H Photo has 15″ MacBook Pros on sale for up to $200 off MSRP. Shipping is free, and B&H charges sales tax in NY & NJ only: – 15″ 2.8GHz MacBook Pro Space Gray (MPTR2LL/A): $2249, $150... Read more
Roundup of Apple Certified Refurbished iMacs,...
Apple has a full line of Certified Refurbished 2017 21″ and 27″ iMacs available starting at $1019 and ranging up to $350 off original MSRP. Apple’s one-year warranty is standard, and shipping is free... Read more
Sale! 27″ 3.8GHz 5K iMac for $2098, save $201...
Amazon has the 27″ 3.8GHz 5K iMac (MNED2LL/A) on sale today for $2098 including free shipping. Their price is $201 off MSRP, and it’s the lowest price available for this model (Apple’s $1949... Read more
Sale! 10″ Apple WiFi iPad Pros for up to $100...
B&H Photo has 10.5″ WiFi iPad Pros in stock today and on sale for $50-$100 off MSRP. Each iPad includes free shipping, and B&H charges sales tax in NY & NJ only: – 10.5″ 64GB iPad Pro: $... Read more
Apple iMacs on sale for up to $130 off MSRP w...
B&H Photo has 21-inch and 27-inch iMacs in stock and on sale for up to $130 off MSRP including free shipping. B&H charges sales tax in NY & NJ only: – 27″ 3.8GHz iMac (MNED2LL/A): $2179 $... Read more
2017 3.5GHz 6-Core Mac Pro on sale for $2799,...
B&H Photo has the 2017 3.5GHz 6-Core Mac Pro (MD878LL/A) on sale today for $2799 including free shipping plus NY & NJ sales tax only . Their price is $200 off MSRP. Read more
12″ 1.2GHz Space Gray MacBook on sale for $11...
Amazon has the 2017 12″ 1.2GHz Space Gray Retina MacBook on sale for $100 off MSRP. Shipping is free: 12″ 1.2GHz Space Gray MacBook: $1199.99 $100 off MSRP Read more

Jobs Board

*Apple* Retail - Multiple Positions - Farmin...
Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, you're also the Read more
Frameworks Engineer, *Apple* Watch - Apple...
Job Summary Join the team that is shaping the future of software development for Apple Watch! As a software engineer on the Apple Watch Frameworks team you will Read more
*Apple* News Product Marketing Mgr., Publish...
Job Summary The Apple News Product Marketing Manager will work closely with a cross-functional group to assist in defining and marketing new features and services. Read more
Fraud Analyst, *Apple* Advertising Platform...
Job Summary Apple Ad Platforms has an opportunity to redefine advertising on mobile devices. Apple reaches hundreds of millions of iPhone, iPod touch, and iPad Read more
*Apple* Information Security - Security Data...
Job Summary This role is responsible for helping to strengthen Apple 's information security posture through the identification and curation of security event data. Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.