Published by PitchChanger · Updated · How these guides are made
Hear the difference
Original synthesized diagnostic material, authored at 48 kHz, 16-bit PCM. These are controls for the worksheet, not measurements of this tool or real instruments.
Pause your workspace preview before comparing these clips.
Start quietly. Download the WAV files for external comparison; no listening outcome is asserted.
How to use this workflow
Choose the stable middle
Avoid the onset and fade when asking about sustain. Note any vibrato or tremolo already in the source.
Change one setting
Export one pitch or speed setting at a time. Preserve the original and label the actual controls used.
Repeat a short comparison
Listen to corresponding held portions at a conservative fixed volume. Record whether the observation repeats.
Steady carrier versus deliberate 5 Hz pulsing
Steady uses a 440 Hz sine carrier at nominal amplitude 0.2. Modulated multiplies that carrier by 1 + 0.4 sin(2π × 5t), giving a nominal envelope range of 0.12–0.28 away from the boundary fades. This is intentional amplitude modulation, not an artifact produced by PitchChanger.
Both controls last four seconds with 20 ms boundary fades. Compare their middle two seconds to learn what regular pulsing means. Real sustained voices contain natural modulation, so a difference from this pure tone is not evidence of poor vocal quality.
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| Checkpoint | Action or value | Interpretation |
|---|---|---|
| Carrier | 440 Hz | Same nominal note |
| Modulation | 5 cycles per second | Intentional amplitude change |
| Interior range | 0.12–0.28 | Before PCM rounding |
Distinguish the intended musical change
For a +12 semitone shift, an ideal 440 Hz carrier becomes 880 Hz. That change is expected. New irregular level variation or grain is a separate listening observation and should be checked against an unprocessed passage.
PitchChanger has no formant control. Do not interpret a changed vocal character as a failed formant-preservation setting that does not exist. Choose a less extreme shift if it better serves the practice task, and verify the saved export.