pulse-code modulation

(redirected from IMA ADPCM)

pulse-code modulation

[′pəls ¦kōd ‚mäj·ə′lā·shən]
(communications)
Modulation in which the peak-to-peak amplitude range of the signal to be transmitted is divided into a number of standard values, each having its own code; each sample of the signal is then transmitted as the code for the nearest standard amplitude. Abbreviated PCM.
References in periodicals archive ?
The high performance codec features audio capture within 50 ms, ensuring that voice commands are not clipped, and it encodes audio to the IMA ADPCM standard to maintain high quality over a low bandwidth, low power wireless link.
The IMA ADPCM compression adaptation was developed for Lotus by VocalTec, Inc.
The KX1400 supports both 12-bit PCM and 4-bit IMA ADPCM data formats, and has a built-in tone generator capable of generating tones at 4,096 different frequencies.