OP
- Thread Starter
- #81
Last edited:
-
WANTED: Happy members who like to discuss audio and other topics related to our interest. Desire to learn and share knowledge of science required. There are many reviews of audio hardware and expert members to help answer your questions. Click here to have your audio equipment measured for free!
Test CD for measurements of CD Players
- Thread starter NTTY
- Start date
Luca Sorrentino
Member
I don't understand why I have 17.1 ENOB. 
I've read somewhere I have to correct something, I don't remember where.
Magic of dither (self dither in this case in my understanding)?
I've read somewhere I have to correct something, I don't remember where.Magic of dither (self dither in this case in my understanding)?
OP
- Thread Starter
- #83
We talked about it here.
You see 17.1bits here because REW uses the full formula and so accounts for the -17.91dBFS attenuation that I see at the input of your interface.
REW should be updated soon to allow us toggling on and off the full or simplified formula, so the ENOB will be correctly calculated in our case. That means the formula should assume that we measure full-scale input signal, and so should be:
With your measurement, the ENOB would be roughly 14.2 bits.
I hope it clarifies.
You see 17.1bits here because REW uses the full formula and so accounts for the -17.91dBFS attenuation that I see at the input of your interface.
REW should be updated soon to allow us toggling on and off the full or simplified formula, so the ENOB will be correctly calculated in our case. That means the formula should assume that we measure full-scale input signal, and so should be:
With your measurement, the ENOB would be roughly 14.2 bits.
I hope it clarifies.
Luca Sorrentino
Member
What is the procedure for capturing crosstalk measurements from CD?
I'd like to add these measurements to my previous efforts, and I think it will be highly relevant to my next set of measurements for a dual-DAC setup. Thx
I'd like to add these measurements to my previous efforts, and I think it will be highly relevant to my next set of measurements for a dual-DAC setup. Thx
OP
- Thread Starter
- #86
Use files #17 and #18 for that purpose.
They are a sequence of 100Hz, 1kHz and 10kHz test tones.
File #17 has data in left channel only. So play it and measure the output of the right channel of the player. You will see 100Hz, 1kHz and 10kHz respective leakages, which is the crosstalk (should be very low, like below -90dB).
File #18 for the right to left channel crosstalk
They are a sequence of 100Hz, 1kHz and 10kHz test tones.
File #17 has data in left channel only. So play it and measure the output of the right channel of the player. You will see 100Hz, 1kHz and 10kHz respective leakages, which is the crosstalk (should be very low, like below -90dB).
File #18 for the right to left channel crosstalk
Similar threads
