reduce playback level without disgusting analog mechanical potentiometers.
Jonte Knif said:Asking TI would probably not help
Jonte Knif said:Asking TI would probably not help
playboss said:user coefficients for DF would ve been soo nice , maybe in next rev. ?
Rochey said:However, even in the PCM1796 datasheet (page 13 I think), we can see the output FFT of the device, where the noise floor is down at -155dB. Even with 24bit data, we couldn't get a signal down nearer to the noise.
Rochey said:I'm no expert, but I think it's one of the reasons why people like to dither a signal when they move from 24bit to 16bit, rather than just truncate.
Rochey said:(i'm a little out of depth at 9.30 in the morning on this one though)
Rochey said:If I ever see/hear of a conductor using a click track, i may go nuts. (i'm sure there are some examples!!!)
Anyway please note that the PCM1794A output stage has been designed (the internal equivalent circuit of Iout is a kind of floating source) to drive an active I/V converter. We provide in the datasheet design recommendations for the I/V stage in order to give proper guidance to users of this part.
We do not recommend passive I/V conversion and do not provide design recommendation for this.
As already pointed out, dither actually adds resolution. Think of it like operating the bottom bit as a PWM to duty cycle average lower than LSB amplitudes.Rochey said:Hello Winston,
There's a lot to be said about an "audible" noisefloor making music easier on the ears. I'm no expert, but I think it's one of the reasons why people like to dither a signal when they move from 24bit to 16bit, rather than just truncate. (i'm a little out of depth at 9.30 in the morning on this one though)
That, and the talent level with these guys was so much higher than modern musicians. While folks these days will quantise the living sh*t out any timing, then squeeze all the dynamic range they can out of the signal too.
It's sad really. The only real music left with any dynamic range is classical... and even there, it's becoming a challenge to leave the music untouched.
If I ever see/hear of a conductor using a click track, i may go nuts. (i'm sure there are some examples!!!)
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