Hello Everyone,
I am developing an Audio application project on ADSP Bf537 EZ-LITE
board. I have developed compression and decompression algorithms for the Audio
samples. The algorithm is working fine and I have tested it.
Now I want to achieve live recording and output the recorded samples
at the speaker/headphone connected at "LINE_OUT" port of the board. I have a
Mike from "Zebronic", which I will connect to "LINE In" port of the board by the
Audio Connector. The "LINE IN" port of the board does not provide power to the
mike, so I am connecting the Mike Output parallelly to the "Mic" port in the PC
which provides the power to the mike.
Hence with the setup as described, "Mic" port of PC will drive the
Mike and Audio signal from the mike is sent via a "Audio Connector" to the "
LINE IN" port of the Board. I will record the Audio samples and play it from
the "LINE OUT" port of the board.
Now I have the following queries.
1. Can I connect the "Mic"port of the PC to the board via an Audio
Connector?? Will it cause any damage to the port pins of the board??.
2. Is there any other option through which I can achieve the goal??
Regards,
Nithin K S
Audio Connectios for BF537 EZKit Lite board
Started by ●August 22, 2008
Reply by ●August 22, 20082008-08-22
Howdy Nithin,
I used a microphone pre-amp to get a 1 Volt 20 mA drive for
an experiment long ago. Check the specs on the audio input
and compare that to your mic signal output. I would think
that either a direct connection will work or use of a pre-amp
will make the direct plug in very easy.
Patience, persistence, truth,
Dr. mike
On Fri, 22 Aug 2008 i...@gmail.com wrote:
> Hello Everyone,
> I am developing an Audio application project on ADSP Bf537 EZ-LITE board. I have developed compression and decompression algorithms for the Audio samples. The algorithm is working fine and I have tested it.
> Now I want to achieve live recording and output the recorded samples at the speaker/headphone connected at "LINE_OUT" port of the board. I have a Mike from "Zebronic", which I will connect to "LINE In" port of the board by the Audio Connector. The "LINE IN" port of the board does not provide power to the mike, so I am connecting the Mike Output parallelly to the "Mic" port in the PC which provides the power to the mike.
> Hence with the setup as described, "Mic" port of PC will drive the Mike and Audio signal from the mike is sent via a "Audio Connector" to the " LINE IN" port of the Board. I will record the Audio samples and play it from the "LINE OUT" port of the board.
>
> Now I have the following queries.
>
> 1. Can I connect the "Mic"port of the PC to the board via an Audio Connector?? Will it cause any damage to the port pins of the board??.
> 2. Is there any other option through which I can achieve the goal??
>
> Regards,
> Nithin K S
>
I used a microphone pre-amp to get a 1 Volt 20 mA drive for
an experiment long ago. Check the specs on the audio input
and compare that to your mic signal output. I would think
that either a direct connection will work or use of a pre-amp
will make the direct plug in very easy.
Patience, persistence, truth,
Dr. mike
On Fri, 22 Aug 2008 i...@gmail.com wrote:
> Hello Everyone,
> I am developing an Audio application project on ADSP Bf537 EZ-LITE board. I have developed compression and decompression algorithms for the Audio samples. The algorithm is working fine and I have tested it.
> Now I want to achieve live recording and output the recorded samples at the speaker/headphone connected at "LINE_OUT" port of the board. I have a Mike from "Zebronic", which I will connect to "LINE In" port of the board by the Audio Connector. The "LINE IN" port of the board does not provide power to the mike, so I am connecting the Mike Output parallelly to the "Mic" port in the PC which provides the power to the mike.
> Hence with the setup as described, "Mic" port of PC will drive the Mike and Audio signal from the mike is sent via a "Audio Connector" to the " LINE IN" port of the Board. I will record the Audio samples and play it from the "LINE OUT" port of the board.
>
> Now I have the following queries.
>
> 1. Can I connect the "Mic"port of the PC to the board via an Audio Connector?? Will it cause any damage to the port pins of the board??.
> 2. Is there any other option through which I can achieve the goal??
>
> Regards,
> Nithin K S
>
