3 results about "Audio signal classification" patented technology

Methods and processors for detecting a synthetic audio signal is disclosed. The method comprising: acquiring a candidate audio signal; generating a spectrogram representation of the candidate audio signal, the spectrogram representation comprising values for respective frequency-time pairs; generating a frequency-based combined patch using the spectrogram, a given combined value in the frequency-based combined patch being a combination of values from the spectrogram sharing a same frequency coordinate and different time coordinates; classifying the candidate audio signal as the synthetic audio signal using the frequency-based combined patch.

This utility model discloses a device for detecting thermal events in shipborne new energy vehicles, comprising: a headlight flicker detection sub-device, an alarm horn detection sub-device, and a new energy vehicle thermal event alarm sub-device; a camera group is deployed to ensure the acquisition of video images of all new energy vehicles; a headlight flicker detector detects headlight flicker events, avoiding misjudgments due to human negligence or fatigue; a microphone group is responsible for collecting sound from inside the vehicle compartment of the roll-on / roll-off ship; an audio signal classification and recognition device automatically identifies whether the audio data contains a car horn event; a signal superposition device superimposes the high-level signals detected by the headlight flicker detector and the audio signal classifier, and a thermal event judge determines whether a new energy vehicle thermal event has occurred based on the superimposed voltage signal, thereby significantly improving the objectivity and reliability of vehicle thermal event determination.

Methods and processors for detecting a synthetic audio signal is disclosed. The method comprising: acquiring a candidate audio signal including a plurality of audio values; generating a set of patches using the plurality of audio values, a given one from the set of patches including a pre-determined number of audio values from the plurality of audio values, generating a combined patch using the set of patches, a given one value in the combined patch being a combination of values from respective ones from the set of patches; classifying the candidate audio signal as the synthetic audio signal using the combined patch.