killswtch's Home Automation and Media Projects
This is the story of my attempts at integrating various technologies into a 3-bed semi, constructing as much of the hardware and electronics as possible myself.
Thursday 6 December 2007, 9:08 PM
Software-based matrix switcher?
Today I discovered two new libraries/applications:
o Festival (text-to-speech engine)
o PulseAudio (distributed cross-platform feature-packed sound daemon)
This has opened up a whole new realm of possibilities. Rather than paying out £400+ for an A/V matrix switcher, PulseAudio may allow everything to be done through a combination of software and soundcards. If I understand it correctly, the audio sources could be anywhere in the house (via a nearby networked computer with soundcard) and the sinks (amps, speakers, recorders etc.) can be elsewhere in the house (also connected to a nearby computer). The network carries the audio over IP and PulseAudio does all the funky stuff.
Combine this with the text-to-speech features of festival and you’d also have a talking house. This isn’t a new idea - many home-brew home automators have added TTS facilities to their houses - but it’s an interesting one. While it wouldn’t be used for frequent announcements, urgent announcements could be broadcast. If I can get the alarm system connected to the network, it could shout out messages to intruders. If a CO or smoke detector is triggered, the voice system could relay the message to all rooms in the house.
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