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.

• 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

* above measurement measure in both ch1&2

- balance / unbalanced

- instantaneous Level (V) x Time (s)

- Frequence (Hz) x Level (dBrA)

- e.g 60 Hz and 7 kHz signals

- SMPTE/DIN ratio (dB) x Generator Level (dBFS)

- lower better

- e.g 32 Tone input Signal / 192 kHz Sampling Rate

- Level (dBrA) x Frequency (Hz)

- e.g Jitter Noise and Spectrum 256k Point FFT, 16 Averages

- Level (dBrA) x Frequency (Hz)

- e.g 44.1 KHz Sampling

- Level (dBrA) x Frequency (Hz)

- Relative Level (dB) x Generator Level (dBFS)

- 0dB Relative Level is best

- 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

- 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)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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