‘Adpcm’
An Electronicstalk guide
Start with the news release BVM unveils MP-840 video and audio capture card from BVM, which we summarised at the time by saying "BVM has introduced a high-end video and audio capture Mini-PCI card that supports the H.264 MPEG-4 video compression standard, digitally encoding four channels at 120fps with full D1 resolution.". Several months prior to that, we featured the news release Mouser stocks RF transceiver SoC from Mouser Electronics: "Mouser Electronics has announced it is stocking the ZIC2410 RF Transceiver System-on-Chip (SoC) from California Eastern Laboratories (CEL).".
In August 2008, we covered the news from Gleichmann-Sunrise - take a look at Demo kit talks of voice synthesis developments which says: "Microcontroller-based demonstration kit features an audio data conversion tool for conversion and downloading of voice data via the USB port.".
Take a look also at the news release from Winbond Electronics Corp America, Audio recorder IC manages more messages, as well as Digital signal controllers target audio from Microchip Technology, and Speech-synthesis chips increase vocal range from Oki Electric.
Latest stories...
Integrated devices shrink ZigBee applications (March 2008)
The MG245x product family claims world-class performance, with the highest Tx power, highest Rx sensitivity, high datarates and low power consumption compared with existing ZigBee chip offerings.
Voice synthesis IC is easy to integrate (September 2007)
Event input method enables playback of prerecorded voice data by using level shifting at the input terminal as the starting trigger.
IC upgrades Bluetooth possibilities (September 2007)
BlueCore6 includes CSR's AuriStream technology, which provides toll quality voice calls and is capable of a 40% reduction in power consumption.
Multimedia processor upgrades handset audio (February 2007)
Multimedia processor recreate the scintillating experience of a personal audio player on a phone while still being able to deliver up to 100 hours of playback time.
A/V capture card runs its own MPEG4 hardware (March 2006)
The high performance IVC-8371P includes four channels of video and audio MPEG4 hardware encoding to provide real-time VGA quality video and stereo audio capture for each channel.
Dev kit enables high-end professional audio (July 2005)
The PADK is a stand-alone board based on the new TMS320C6727 digital signal processor, and is aimed at high-end professional audio applications.
Audio technology is optimised for ARC cores (May 2005)
Sonic's Embedded Audio Synthesis technology is now available for the ARCsound audio subsystem.
Capture card handles multiple channels (April 2005)
The IVC-4300 is a four-channel MPGE4 audio/video capture card for multichannel applications.
Further reading
- ADPCM processor has eight full-duplex channels
The Atelic AT1008F is an eight-full-duplex-channel ADPCM processor which follows the G.726 ITU standard for ADPCM compression for 40, 32, 24 and 16Kbit/s bitrates with selectable u-law and A-law I/O. - ADPCM processor takes echo cancellation onboard
New from Steadlands is the AT1004, a four-channel full-duplex ADPCM processor with conferencing and echo cancellation capabilities.
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