[digital_amp] project

Links from the List


Bang & Olufsen ICEPower Digital Amplifier Modules

A "benchmark" for the [digital_amp] project can be found at :

Tact Audio Millenium or for a more technical explanation

There is a lot of interesting information on the all-digital 'amplifier' to be found here. Also, it would serve well as a BENCHMARK or point of reference which everyone on the list is familiar with.

Motorola's dedicated Audio DSP

Apogee -- The advantages of a 'damped ternary' approach over a binary output.
Crown -- "BCA" output stage topology
QNX -- Real Time OS used by a lot of instrument designers for medical, industrial, telecom...
Vicor -- They make potted switching power supply modules apparently for very-high-tech and military customers, and are always bragging about their latest volume reduction.
Apex Microtechnology -- PWMs, PAs in Power SIP
The Meridian 561 also has digital output, 8 channels of it.
Motion control boards Delta Tau

Interferometer
One axis of speaker-compatible laser position tracking to quadrature outputs
Sonorus AudI/O 24/96 A/D D/A

Development/Libraries

homepage: http://theory.lcs.mit.edu/~fftw
download: http://theory.lcs.mit.edu/~fftw/download.html
changelog: http://theory.lcs.mit.edu/~fftw/release-notes.html

description:
FFTW is a fast C FFT library. It includes complex, real, and parallel
transforms, and can handle arbitrary array sizes efficiently. FFTW is
typically faster than other publically-available FFT implementations, and
is even competitive with vendor-tuned libraries (benchmarks are available
at the homepage). To achieve this performance, FFTW uses novel
code-generation and runtime self-optimization techniques (along with
many other tricks).

Changes:
Many improvements in parallel transforms, plus bugfixes. Support
for parallel real-complex, complex, plus shared-memory threads
and MPI.


http://freshmeat.net/news/1999/03/08/920930400.html

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