Professional Audio Playback Chips for Embedded Systems
Voice Playback IC is an integrated circuit dedicated to storing and playing sounds, which is widely used in toys, home appliances and electronic devices. It supports recording function and is usually equipped with a simple control interface for user operation. The IC can adapt to multiple audio formats and has a low power design and high-quality audio output.
OTP (One-Time Programmable) voice chips are programmed once with audio content that cannot be modified afterward. Capacity ranges from 6 seconds to 170 seconds. Ideal for voice prompt, voice navigation, and voice announcement applications such as small home appliances, smart home devices, doorbells, alarms, vacuum cleaners, home electronic medical devices, smart locks, and more.
Rewritable Voice Chips feature built-in voice content that can be replaced, making them ideal for product development and prototyping. During the R&D phase, developers can repeatedly change voice samples for debugging and comparison. Featuring 16-bit PWM output, these chips offer storage capacity ranging from 170 seconds to 6800 seconds. Suitable for home appliances, medical devices, security products, alarms, doorbells, consumer electronics, and more.
Voice Recording Chips capture audio via microphone or line-in input, followed by noise reduction, encoding, storage (or data transmission), and decoding for playback. Available in 16-bit ADC and 24-bit ADC variants, supporting MP3, WAV, and OUPS audio formats. Suitable for applications such as medical monitoring, voice recorders, pet sound recorders, recording devices, conference recorders, surveillance recording, intercom systems, AI products, and more.
High-fidelity MP3/WAV playback with 96dB SNR. TF card/USB storage support. Ideal for music playback, elevator systems, and premium audio applications.
Multi-function chips with audio + LED/LCD drivers + GPIO. WT380 series combines voice, display control, and sensor interfaces for integrated designs.
Bluetooth 5.4 wireless streaming + local MP3 playback. Supports smartphone audio and standalone TF card operation. Enables wireless OTA firmware updates.
Six categories from OTP to Bluetooth solutions. Single-vendor sourcing for all voice playback needs—eliminates compatibility issues.
Direct 0.5-3W speaker drive without external amp. Greatly saves BOM cost and PCB space with fewer components.
<5μA standby current for multi-year battery operation. Deep sleep modes maximize efficiency for portable devices.
Multiple update methods: UART, USB, TF card, Bluetooth OTA. From factory programming to end-user wireless updates.
Multi-floor voice guidance with clear speech
Transaction amount and real-time status alerts
Interactive sound effects and character voices
Pre-loaded musical chimes and custom tones
High-volume safety alerts and status reports
Appliance operation confirmations and reminders
Intrusion warnings and zone status announcements
Patient instructions and measurement readouts
A: Yes. Our voice playback ICs feature ultra-low standby current (<5μA for WTN6/WT588F, <3μA for WTV/WT2003H). With two AA batteries, devices can operate for over one year with typical usage. The deep sleep mode and efficient PWM output maximize battery life for wireless doorbells, remote controls, and portable devices.
A: PWM output directly drives 8Ω speakers with minimal external components—most cost-effective for simple voice prompts. DAC output requires an external amplifier but delivers superior audio quality with higher signal-to-noise ratio. Choose PWM for budget consumer products, DAC for high-fidelity applications like premium speakers or medical devices.
A: We offer five update methods: (1) On-board SPI/UART update via MCU, (2) PC USB update using our tool, (3) U-disk auto-update by end users, (4) MCU write-in during firmware upgrade, (5) Bluetooth OTA for remote wireless updates. The update method depends on your product design—we support breakpoint resume and verification to prevent corruption.
A: Yes. Store different language versions as separate audio segments and switch via control commands. WT588F supports up to 5000 segments, accommodating extensive multi-language content. For export products, WT2003H with external TF card allows end users to swap language packs by changing the memory card.
A: Standard series (WTN6/WT588F/WTV) directly drive 8Ω/0.5W speakers. High-power series (BP/FP suffix models like WTN6040FP, WT588F02BP) drive 8Ω/1-3W speakers without external amplifiers, saving 1-3 RMB BOM cost. For public address systems requiring >5W, use DAC models with external Class-D amplifiers.
A: With our turnkey solutions: Sample verification (1-2 weeks) → Custom programming (24 hours) → Design review (1-3 days) → Trial production (1-2 weeks) → Mass production. Total timeline: 4-6 weeks from project start to first production batch. Our pre-programmed chips eliminate software development time.
A: For voice prompts and speech (“Welcome”, “Payment received”), 8-16kHz sampling is sufficient and conserves storage. For music playback, doorbell melodies, or high-quality audio, use 22-44.1kHz. Our chips support 6kHz-44.1kHz range—higher sampling rates improve quality but increase storage requirements proportionally.
A: Standard commercial-grade chips operate at -20°C to +70°C. Industrial-grade series (WTV/WT2003H) support extended temperature ranges and enhanced EMC performance. For harsh environments, we offer wide-temperature screening and three-proof coating recommendations. Consult our FAE team for extreme temperature applications requiring -40°C to +85°C validation.
Send us your requirements, we will get back to you within 8 hours
