Each bit will get you about 6 dB of dynamic range. So, a 12 bit ADC can give you about 72 dB. Still nowhere near good enough for measuring high quality audio. Remember, the lowly CD player is 16-bit. And you'd need at least a 18-bit ADC to know if a CD player was meeting spec or not.
Some graph about various bit deep...
Keep in mind that high performing SW (used internal bit size) will outperform any today's HW for a long long time 😀
Hp
Attachments
I showed some schematics in my series in AudioXpress. Pete Millet published a design for a more sophisticated one on his website. And Jan Didden will have his design, which looks like a world-beater, in an upcoming Linear Audio.
I published an article in the April 2016 issue of AudioXpress with my simple schematic as well. The article in general may help you very much.
I just began to use Hp's HpW-Works FFT software. I'm still in the learning stages, but it is very powerful. I recommend it to everyone that would like to take their measurements to a higher level. There are many measurement options within his FFT software; more than I have seen elsewhere. More doesn't mean better in all cases, but here it does.
Hp is a member here, see post #22 above.
Hp is a member here, see post #22 above.
- Status
- Not open for further replies.