I am pretty new to this area, when I look through those review, I found that I couldn't understand the meaning of those testing. Is there anywhere that I can find an answer for that?
Below is a little notes I took after read an review, I want to figure out what outcome is ideal and what not for each test, and what happen when the outcome is ideal and what happen when it not.
1. RMS Level (Vrms)
2. TND+N Ratio (%)
3. Frequency (kHz)
4. SINAD (dB)
• e.g output: ASIO: ASIO4ALL v2.2 Chs, 44.1 kHz
• e.g input: Analog Balanced 2 Ch., 200 kohm, 2.5 Vrms, AC (<10 Hz) - 22.4kHz
5. Dynamic range (dB)
* above measurement measure in both ch1&2
6. Output
- balance / unbalanced
7. Scope
- instantaneous Level (V) x Time (s)
8. FFT
- Frequence (Hz) x Level (dBrA)
9. Intermodulation distortion
- e.g 60 Hz and 7 kHz signals
- SMPTE/DIN ratio (dB) x Generator Level (dBFS)
- lower better
10. Multitone test
- e.g 32 Tone input Signal / 192 kHz Sampling Rate
- Level (dBrA) x Frequency (Hz)
11. Jitter measurements
- e.g Jitter Noise and Spectrum 256k Point FFT, 16 Averages
- Level (dBrA) x Frequency (Hz)
12. FFT Spectrum of White Noise
- e.g 44.1 KHz Sampling
- Level (dBrA) x Frequency (Hz)
13. Linearity
- Relative Level (dB) x Generator Level (dBFS)
- 0dB Relative Level is best
14. THD+N versus frequency
- e.g 48 kHz
- THD+N Ratio (%) x frequency (Hz)
- e.g wide band (90 kHz) determines how much of the unwanted ultrasonic are let through
15. Power x Distortion
- e.g 30 Ohm, 300 Ohm
- THD+N Ratio (dB) x W
- THD+N Ratio (dB) x Voltage (Vrms)
Below is a little notes I took after read an review, I want to figure out what outcome is ideal and what not for each test, and what happen when the outcome is ideal and what happen when it not.
1. RMS Level (Vrms)
2. TND+N Ratio (%)
3. Frequency (kHz)
4. SINAD (dB)
• e.g output: ASIO: ASIO4ALL v2.2 Chs, 44.1 kHz
• e.g input: Analog Balanced 2 Ch., 200 kohm, 2.5 Vrms, AC (<10 Hz) - 22.4kHz
5. Dynamic range (dB)
* above measurement measure in both ch1&2
6. Output
- balance / unbalanced
7. Scope
- instantaneous Level (V) x Time (s)
8. FFT
- Frequence (Hz) x Level (dBrA)
9. Intermodulation distortion
- e.g 60 Hz and 7 kHz signals
- SMPTE/DIN ratio (dB) x Generator Level (dBFS)
- lower better
10. Multitone test
- e.g 32 Tone input Signal / 192 kHz Sampling Rate
- Level (dBrA) x Frequency (Hz)
11. Jitter measurements
- e.g Jitter Noise and Spectrum 256k Point FFT, 16 Averages
- Level (dBrA) x Frequency (Hz)
12. FFT Spectrum of White Noise
- e.g 44.1 KHz Sampling
- Level (dBrA) x Frequency (Hz)
13. Linearity
- Relative Level (dB) x Generator Level (dBFS)
- 0dB Relative Level is best
14. THD+N versus frequency
- e.g 48 kHz
- THD+N Ratio (%) x frequency (Hz)
- e.g wide band (90 kHz) determines how much of the unwanted ultrasonic are let through
15. Power x Distortion
- e.g 30 Ohm, 300 Ohm
- THD+N Ratio (dB) x W
- THD+N Ratio (dB) x Voltage (Vrms)
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