"Jerry Avins" <[email protected]> wrote in message
news:[email protected]..
> Richard Owlett wrote:
>> I think I know the answers, but then again
>>
>> I have a "hobby" project to evaluate intelligibility of speech with varying
>> parameters ( primarily sample rate and bandwidth ).
>>
>> [ for perspective, in a previous incantation I "discovered" formants ;]
>>
>> My sample universe is a reading of the Bible recorded under studio
>> conditions. As it is a commercial recording, I'm assuming Nyquist is the
>> least restrictive criterion it meets.
>>
>> Am I correct thinking that if I digitally filter my source to less than 3 kHz
>> i can safely decimate to 8 kHz sample rate?
>
> Yes

And if you filter is good enough, you can push the cut-off further up toward
4kHz.