Sign in
Search motoroladsp
Subscribe to motoroladsp
motoroladsp by Keywords
56303 | 563xx | 5680 | 56805 | 5680x | 56F80 | 56F800DEMO | 56F805 | 56f807 | 56F830 | ADC | Bootloader | Codec | CodeWarrior | CW5 | CW6 | Debugger | DSP56303 | DSP56303EVM | DSP563xx | DSP5680 | DSP56800 | DSP56807 | DSP56858 | DSP56858EVM | DSP56F803 | DSP56F805 | DSP56F807 | DSP56F80x | DSP56F826 | DSP56F827 | DSP56F8xx | EVM | FFT | Flash_over_jtag | GPIO | Interrupt | Interrupts | JTAG | LCD | Linker | MCF5307 | Metrowerks | Modulus | MSCAN | PCMaster | PWM | Quad | Rif | RTOS | SDK | SPI
Discussion Groups
Discussion Groups | Freescale DSPs | RE: Audio to pcm and pcm to audio
Technical discussions about Freescale (Motorola) DSPs (including the DSP56000, DSP56300, DSP56600, 56800 DSPs).
Audio to pcm and pcm to audio - David D. Faerman - Jan 30 3:11:00 2004
|
hello
i have one question
i have the 56F8300demo board how i do to transform pcm in to
audio again?
thanks
david
|
|
|
(You need to be a member of motoroladsp -- send a blank email to motoroladsp-subscribe@yahoogroups.com )
RE: Audio to pcm and pcm to audio - Louis Loving - Jan 30 14:52:00 2004
|
I am using a
Motorola DSP56858 and I used the G711 and G726 libs in the SDK to accomplish this. G711
will Mu-law or A-law encode your audio and G726 will convert it to ADPCM. The examples in
the SDK are pretty good.
Hope this
helps,
Louis
|
(You need to be a member of motoroladsp -- send a blank email to motoroladsp-subscribe@yahoogroups.com )
RE: Audio to pcm and pcm to audio - Winters John-r54531 - Jan 30 15:51:00 2004
|
You need to review the example of the efield
demo.
In this case, the pcm samples were scaled and level shifted into a
table stored in the program.
The PWM was used to output a pulse train based on
this data.
The pulse train is passed thru a hardware lowpass filter on the
board.
This is then audio signal and passed to
speaker.
------------------------------------
-----------------------------------
* For faster turnaround in answering support questions please access * * Motorola's Customer Support web site at * * http://www.motorola.com/semiconductors/support * * * * Or send email to: D...@motorola.com * ----------------------------------------------------------------------- -----------------------------------------------------------------------
|
(You need to be a member of motoroladsp -- send a blank email to motoroladsp-subscribe@yahoogroups.com )