I'd intended to delete the last message but inadvertently hit send
instead.
apologies.
Paul
On 27/05/2007, at 9:01 PM, Paul Jacobson wrote:
>
> On 27/05/2007, at 7:25 PM, Phil Tyler wrote:
>
>> Giving you 8 bits, theoretically, more resolution of
>> low level sounds with 24 bits.
>>
>> Phil
>
> I suspect it's far more than 8 bits as that would imply 2^8 =3D 256
> additional "steps", whereas the actual difference is between 2^16 =3D
> 65,536 and 2^24 =3D 16,777,216.
>
> The page I posted a link to earlier in the week has this rather
> pertinent example:
>
> http://www.24bitfaq.org/#Q0_1_1
>
> "To elaborate further, each bit gives us the ability to represent
> about 6dB of dynamic range. A passage that is 6dB louder than another
> passage is said to be twice as loud as the other passage. In the 4-
> bit example, we theoretically have 24dB of dynamic range that can be
> used. But what if recording doesn=92t take advantage of all that
> dynamic range? What if the recording never peaks beyond 6dB of its
> maximum possible limit? In this case, the recording would only take
> advantage of 3 of what we call the least significant (or left-most)
> bits, meaning 18dB of dynamic range. 16-bit recordings are capable of
> a theoretical maximum limit of 96dB of dynamic range. This means that
> a single wave could have up to 65536 discrete values that can be used
> to represent it. But if the same wave recorded at 16-bit peaks at
> 48dB below its maximum possible limit, then there would only be 256
> discrete values that can be used to represent it, taking advantage of
> only 8 of the least significant bits. The 8 most significant bits
> would contain no information whatsoever, and would remain unused. In
> the case of 24-bit recording, you=92d have a maximum of 16,777,216
> values to choose from, and in the case of a wave peaking at 48dB
> below its maximum possible limit, the wave would still have 65536
> possible discrete amplitude values that could be used to represent
> it."
>
>
>
>
> "While a picture is worth a thousand words, a
> sound is worth a thousand pictures." R. Murray Schafer via Bernie
> Krause
>
> Yahoo! Groups Links
>
>
>
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