On Jun 22, 2007, at 7:40 AM, enkitec@gmail.com wrote:

> On 21 Jun 2007 at 23:39, Nate Duehr wrote:
>
>>
>> Sure, DSP-based solutions can match or better it, but for ease of
>> use, the 8870 is hard to beat in a discreet component.
>>
>> I've seen the 8870 pull DTMF out of noisy FM radio signals that were
>> well below the pseudo-industry-standard 12 dB SINAD "noisy signal"
>> level.
>>
>
> 	I couldn't get them to work ok decoding DTMF from CDMA cell phones.
> 	Had to switch to an Atmel AVR running Goertzel algorithm.
> 	It solved the problem.
>
> 	Mark Jordan

Noise is different than being mangled by a low-bandwidth CODEC.   :-)

--
Nate Duehr
nate@natetech.com



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