1, Analog level Output (Analog Output) : the voice chip converts the digital signal to analog electrical signal output. This output mode is suitable for applications that need to be connected to analog audio input devices, such as speakers, headphones, power amplifiers, etc.
2, according to the output mode of the voice chip is divided into twoClass, one is PWM output mode, the other is DAC output mode, PWM output volume is not continuous adjustable, can not be connected to the ordinary power amplifier, most of the voice chips on the market are PWM output mode.
3, according to the output mode of the voice chip can be divided into two categories, one is PWM output mode, one is DAC output mode. PWM output volume is not continuous adjustable, can not be connected to ordinary power amplifier, most of the voice chips on the market are PWM output mode. Generally used in smart home and security fields such as smart doorbell, alarm and other products.
4, voice ICPWM output and DAC output are common digital to analog audio output methods, and there are the following differences between them: PWM output (pulse width modulation output) : PWM output is to simulate an analog audio signal by adjusting the pulse width of the digital signal.
1, voice IC and voice chip is the same meaning, but the name is different. OTP is a kind of voice chip. OTP's voice chip uses one-time programmable (OTP) memory as a storage medium for voice information. Once data is stored in OTP memory, it cannot be modified or updated; Has unmodifiable properties.
2, OTP voice chip refers to a one-time programming voice chip, it stores has been pre-programmed audio information, once programmed, these data can not be changed. The main application scenarios are as follows: Audio prompt: The OTP voice chip can be used to provide voice reminder functions, such as alarm clocks and timers.
3. OTP (One Time Programable) means oneSecondary programmable voice chip, the voice can only be written once, suitable for application in the need to modify the voice, the length of the voice is short, from the length of the playback can be divided into 10 seconds, 21 seconds, 42 seconds, 85 seconds, 170 seconds, 340 seconds.
4, OTP factory is blank, the content is written at one time, MASk is the production of cured content. The contents of both cannot be changed. OTP can be used relatively flexibly, and MASK is suitable for mass production. Flash memory is cheap now, and these outdated items are rarely used.
5, voice chipA variety of methods are also different, such as OTP voice chips are disposable and repeatable voice chips are programmable. The one-time voice chip cannot be changed after writing, and the program and sound file are completed at one time.
6, OTP voice chip refers to a one-time programmable voice chip, the voice can only be burned once, suitable for application in the occasion that does not need to modify the voice. OTP voice chip is characterized by low cost, convenient control, simple circuit, suitable for industrial grade factory mass production. Voice function chips with OTP include NVB, NVC and NVD.
1, the sound quality of the OTP voice chip is mainly related to the following factors: Sampling rate: Sampling rate refers to the number of samples of audio signals obtained in one second. Higher sampling rates can capture more audio detail and provide higher sound quality. Resolution: Resolution refers to the number of digits that can be represented in each sample.
2, speech quality: the clarity of speech, sound quality and interference will affect the accuracy of recognition. Noisy environments and low-quality recordings can lead to identification errors or reduced accuracy. Training data for speech models: the accuracy of offline speech recognition chips and their trainingThe data sets used are correlated.
3, the storage capacity of the OTP voice chip is one-time burning and curing at the time of production, so its storage capacity is fixed. Usually, the size of the storage capacity affects the number of sound segments that the OTP voice chip can store. In general, the larger the storage capacity of the OTP voice chip, the more voice segments it supports.
4, product packaging: OTP voice chip can be used for product packaging and marketing, such as adding audio in toys, books, greeting cards, movie posters or advertisements. Emergency plan: OTP voice chip can be used for emergency planCases, such as fire alarms and oxygen alarms.