AVR-Chat

I am afraid that analog RF module (2.4GHz) can only transmit
analog signal.
 
Maybe a 2.4GHz digital RF module that could do the job of
transmitting audio signal together with data ?
 
I also have a pre-liminary digital RF module trsansmitting signal
at 1.5Mbps data rate.
 
Info as below:
 
<<<
Preliminary               
1.5 Mbps Wireless Digital Audio Module
44.1KHZ, 16-bit, Digital Wireless Audio
                                                                                    
General Description                  Key Features
�� is a Wireless Stereo Headphone Module  �� 16-bit digital stereo sampling at 44.1KHz giving high
operating in the unlicensed 2.4GHz ISM radio         fidelity audio
frequency (RF) band. Providing compact design   �� 12 selectable co-existing channels
for wireless, cost-saving and high fidelity digital     �� 2 buffer size (time latency) selections: 
stereo headphone solution.       (12.5ms and 100ms)
�� processes audio data sampled at 44.1KHz    �� Additional 2-ways data transfer of up to 14.4Kbps
in 16-bit pulse code modulation (PCM) format providing  for remote keying or control purpose
digital CD audio quality.        �� Build-in audio compression and decompression
�� An improved audio compression algorithm (ADPCM) is   (improved ADPCM)
applied to highly utilize the allocated transmission  �� Time-division-duplex communication design bandwidth and maintain the fidelity of sound.    with error correction
�� also provides 2-way data transfer for    �� Point-to-point wireless transmission
 remote keying or control purpose at speed of   �� Low operating and standby current
14.4 Kbps.           �� Plug and play module design.  
Application: ideal for all audio entertainment units such as headphones, home theatre systems, outdoor, speakers, and public address systems.
                                                                                                                
Technical Specification
Master:
�� Audio transmission method: Digital sampled at 44.1 KHz in 16-bit pulse code modulation (PCM).
�� Transmitter frequency: Unlicensed 2.4GHz ISM RF band.
�� Transmitted data rate: 1.5 Mbps
�� Signal-to-noise ratio: 95dB
�� Channel separation: 100dB
�� Harmonic distortion: -90dB
�� Error correction: 1/2 rate FEC
�� Transmitter output power: 1mW
�� Transmitter operating range: max.200 ft. line of sight, max. 50 ft. through walls and ceiling
Slave:
�� Type: dynamic, closed
�� Operating time: max. 15 hours with two AA batteries
�� Frequency response: 10 Hz to 24 KHz

2.4G Technology

  Wireless Digital Audio Module  
               
Analog-In Digital-Out Master set
                
Digital-In Analog-Out Slave

Terms and Conditions :
Sample charges : USD80.00/set with demo-kit
Other qty:  10 set = US$60/set       100 set = US$50 / set
(more qty price negotiable)
<<<
 
 
Thanks !
 
Jo Zeng
 


John Samperi <samperi@ampertronics.com.au> wrote:
At 05:49 PM 6/12/04 -0800, you wrote:
>       Hi,   anyone is interested in 2.4GHz analog type RF modules ?  &
>audio-video.

This would be ideal if some small ammount of data could also be sent
with the audio (no video required).

Regards

John Samperi

******************************************************
                        Ampertronics Pty. Ltd.
  11 Brokenwood Place Baulkham Hills, NSW 2153 AUSTRALIA
         Tel. (02) 9674-6495       Fax (02) 9674-8745
               Email: samperi@ampertronics.com.au
                 Website  http://www.ampertronics.com.au
* Electronic Design   * Custom Products   * Contract Assembly
******************************************************


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