Vendor: Dolphin Semiconductor Category: Audio Analog

Always-on Digital Voice Activity Detection

WhisperTrigger allows your system to detect voice activity and increase its battery life.

Overview

WhisperTrigger allows your system to detect voice activity and increase its battery life. Our robust and silicon-proven, Voice Activity Detection solution, provides ultra-low-power Always-On Voice listening IP for a fast time to market. The WT-d.03 is a pure logic Virtual Component (ViC) containing a Voice Activity Detection (VAD) engine for ultra-low power applications. The WT-d detects the presence of a voice at the output of a DMIC or at the output of a voice ADC embedded on SoC to switch on the system to perform Keyword Spotting.

Key features

  • Voice activity detector enables drastic reduction in power consumption
  • Self-adjustment to background noise
  • Ambient Noise sensing

Block Diagram

WT-d.03 block diagram

Specifications

Identity

Part Number
WT-d.03
Vendor
Dolphin Semiconductor
Type
Silicon IP

Files

Product Sheet Download

Note: some files may require an NDA depending on provider policy.

Provider

Learn more about Audio Analog IP core

Why VAD and what solution to choose?

More than ever before, the attention to power consumption is paramount when developing new products. In this environment, voice activity detection has a major role to play for any new voice-controlled system.

Improving Battery-Powered Device Operation Time Thanks To Power Efficient Sleep Mode

Allowing battery-powered devices to run, without battery recharge, for years rather than months, partakes in enhancing significantly end-user satisfaction and is a key point to enabling the emergence of IoT applications. Numerous applications, such as M2M, BLE, Zigbee…, have an activity rate (duty cycle) such that the power consumption in sleep mode dominates the overall current drawn by the SoC (System on Chip). For such applications, the design of the “Always-On power domain" (a.k.a AON power domain) is pivotal.

Pairing Sensitive RF with Voltage Regulators for Noise-Free IoT Modules

This article presents the challenge of pairing an RF analog circuit with the appropriate inductor-based embedded Switching Regulator (namely eSR, equivalent to on-board DC/DC) allowing to meet both the power efficiency requirements and the module performance level at the same time.

Frequently asked questions about Audio Analog IP cores

What is Always-on Digital Voice Activity Detection?

Always-on Digital Voice Activity Detection is a Audio Analog IP core from Dolphin Semiconductor listed on Semi IP Hub.

How should engineers evaluate this Audio Analog?

Engineers should review the overview, key features, supported foundries and nodes, maturity, deliverables, and provider information before shortlisting this Audio Analog IP.

Can this semiconductor IP be compared with similar products?

Yes. Buyers can compare this product with similar semiconductor IP cores or IP families based on category, provider, process options, and structured technical specifications.

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