I. Product Introduction：
TMC104A voiceprintdatacollectionterminalAct asfirstApprovalMinistry of Public SecurityQuality Supervision of Criminal Technology ProductsInspection Center TestingProfessional voiceprint data acquisition equipment for obtaining test reports,Yes?continuity48 Hours DialoguecollectionRealizationA voiceprintIdentificationApplication frontierA voiceprintRecognition TechnologyTailor-made for the public security systemVoice print acquisitionWith voiceprint identification products.afterTMC104Voice print data acquisition terminalOfVoice print data can be uploaded directly to the voiceprint collection database of the Ministry of Public Security through the special network of public security.TMC104 hasListed in the product catalogue of voiceprint data acquisition equipment of the Ministry of Public Security and recommended as a key manufacturer by the Ministry of Public Security to promote its application to public security units at all levels throughout the country.
II. Product Characteristics：
l Using Professional Audio Acquisition ListDirectivitycollectiontechnologyBetter shieldingaroundEnvironmental noise,sendThe collected voiceprint data are more fidelity.
l Using a brand new arrayMicrophoneTechnology, voiceprint data acquisition function is more advanced.Powerful；
l The built-in role separation algorithm is adopted.Yes?Separating the voices of suspects and investigators independently from two independent audio channels,Make voiceprint dataAcquisition is not affected by cross-over audio.ensureVoice print data quality;
l productHaveMute discarding function, automatic screening of suspect audio dataandRecording and discarding the silent part of the suspect when he is not speaking.generateThe suspect's valid uncompressed raw audio;
l productHavelow、Medium,High multilevel noise suppression function.Give WayThe noise interference of voiceprint acquisition is minimized.
l productIt has the function of speech activity detection.Yes?Automatic isolation of noise and mute environment is abandoned.
l Soft and hardThe technical parameters of the case fully meet the requirements of the Ministry of Public Security.dataIt can be uploaded directly to the voiceprint database of the Ministry of Public Security.
l Appearance of hardware voiceprint acquisition equipmentDesignExquisite,convenientCarry,securityDurable;
l operationThe system software interface is simple and friendly, and the operation is convenient.
Technical parameters：
l Microphone array：Microphone array design should be adopted
l Directivity：One-way1 kHz sinusoidal signal for reference)
No more than& Plussmn; Sound pressure level from - 7dBFS to - 9dBFS in the range of 45 degrees incident angle (front).
Beyond& Plussmn; Sound pressure level from - 12dBFS to - 14dBFS in the range of 60 degrees incident angle (front).
Beyond& In the range of 90 degree incident angle (opposite), the suspect has no output signal for the channel audio, but can acquire the audio signal in the specified channel.
l sensitivity：≥60mV/Pa
l Local noise level：≤36dB
l SNR：≥60dB
l Frequency response:50-8kHz。
l Acquisition Voice Format：Windows PCM WAV, Mono, 16-bit Quantization Accuracy
l sampling rate：16 kHz sampling rate
l Waveform distortion：≤7%
l Noise suppression：It has the function of low, medium and high level noise suppression.
l Speech Activity Detection：It has the function of silent segment detection and discarding.
l Functional testing：The test acquisition software has the functions of signal-to-noise ratio detection, effective time-length detection, truncation ratio detection, average energy detection and multi-speaker detection.
l Access Management：After the acquisition terminal can be connected to the online computer of the public security network, the chip of the equipment can be used.ID code or MAC address, the name of the user, local IP address and other information are registered to the national voiceprint database management platform. After approval, the voice data collected by the acquisition terminal can be uploaded to the voiceprint database.
SpecificationsSize:96mm*96mm*20mm(length*width)*high)