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F.A.Q. Frequently asked questions.

Dual Frequency Waveform Generator - IMD Test

Introduction

A dual frequency tone generator will help you design your own IMD tests or experience the beat of two oscillators. A beat is an interference between two sounds of slightly different frequencies, perceived as periodic variations in volume whose rate is the difference between the two frequencies (e.g. 440Hz+442Hz at the same level will produce a 2Hz beat).

.wav File Signal Generator

•	Dual Frequency Tone Generator	•

•	Waveform ..... Dual Sine Tone Frequency .... 1Hz~SampleRate/2 (two tones) Level ........ -72~-3dBFS (only clipping-free combinations allowed) Duration ..... 0.01~10s Sample Rate .. 8·16·22.05·32·44.1·48kHz Output ....... Uncompressed .wav file (16bit) downloaded to disk	•

•	Frequency	Level	Duration	SampleRate	•
	Hz Hz	dBFS dBFS	s	8 16 22.05 32 44.1 48 kHz

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External Links

• Online dual frequency generator (longer durations, up to 96kHz sampling frequency)
• IMD @ Wikipedia
• Rane note : audio specifications