Real-time sound source localization method based on transient dual-time sequence triggering method
The invention discloses a real-time sound source localization method based on a transient dual-time sequence triggering method, which relates to the field of sound source localization and comprises the following steps of: receiving a sound source signal by using three microphones; a sound signal rec...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention discloses a real-time sound source localization method based on a transient dual-time sequence triggering method, which relates to the field of sound source localization and comprises the following steps of: receiving a sound source signal by using three microphones; a sound signal received by the microphone is converted into an analog signal and amplified through a high-speed amplification circuit; through a high-speed LVDS comparator circuit, carrying out high-speed sampling on the converted analog signal to obtain a low-voltage differential signal of the sound; a low-voltage differential signal of sound is converted into a TTL (transistor-transistor logic) signal through an LVDS (low voltage differential signaling) conversion circuit, external interruption of stm32 is triggered at the moment of level change of the TTL signal, the moment of the external interruption of the stm32 is measured by a double-time sequence method, and transient time when the microphone receives the sound signal is ob |
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