BLE Voice

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Question: Is the built-in 320KByte memory of the KT142C voice chip insufficient? Are there other solutions? The KT142C voice chip comes with 320KBytes of built-in memory . You can find detailed information about this in Section 4.3 of the chip manual, as shown in the diagram below. Here's a detailed explanation of why it's 320KBytes: Although the KT142C chip has a total internal memory of 512KBytes , part of it is used for firmware storage , and another portion is reserved for system memory management . The remaining space —about 320KBytes —is available for the user to replace and store custom voice data. Unfortunately, there isn't any additional free space to expand within the chip itself. If 320KBytes is not sufficient for your application, the only option is to choose a design with external Flash memory . In this case, the available voice storage capacity depends entirely on the size of the external Flash chip you use. Advantage: Storage space can be ex...

  Looking for a 1-minute voice chip that allows self-downloading and sound replacement? If you're looking for a voice/audio playback chip with around 1 minute of storage , and you need to be able to download and replace the audio content yourself , then OTP-type chips (One-Time Programmable) on the market are not suitable . You'll need to use a Flash-type voice chip instead. In this case, we recommend the KT148A (SOP8 package) voice chip, which can directly drive a 0.5W speaker . You can refer to the minimum system circuit for detailed hardware design. 🔹 Key Features of the KT148A Chip High Cost-Performance Ratio KT148A adopts an advanced manufacturing process, significantly reducing cost while supporting repeated reprogramming , which improves overall value. Large Storage Capacity Built-in 420 KBytes of voice memory, supporting up to 420 seconds of audio playback — suitable for various applications. Multiple Interface Options Provides I²C, SPI, and UART ...