Qualcomm Audio Calibration Tool < Simple ✔ >

Qualcomm frameworks organize audio processing into logical "graphs" made of modules, ports, and connections. QACT visualizes these topologies. It lets engineers trace the exact path an audio signal takes from a physical microphone, through various DSP algorithms, to the operating system or speaker. 3. Comprehensive Module Library

Adjust gain, noise reduction, and beamforming for superior voice quality.

The tool serves several key purposes:

The tool connects to the Snapdragon-powered target device—usually via USB—using ADB (Android Debug Bridge) or similar debugging interfaces. 3. Loading the Audio Graph qualcomm audio calibration tool

The optimized parameters are saved into an Audio Calibration Database ( .acdb ).

The tool works seamlessly with [AudioReach™], providing access to advanced debug features and runtime graph modifications.

With the rise of head tracking, the tool now includes a module. Calibrators place a dummy head (B&K 4128C) with in-ear microphones. The tool measures how the earbud sounds when the user turns their head 90 degrees left, then compensates for frequency shadowing. and reproduced. 1.

Devices must pass rigorous certification tests, such as Microsoft Teams certification, Amazon Alexa Voice Service (AVS) requirements, or carrier-specific cellular voice standards. QACT provides the precise granularity required to tweak acoustic parameters to hit these strict target curves. The QACT Workflow: Step-by-Step

Once the audio performance is optimized, QACT packages the parameters into calibration files (typically .acdb or Audio Calibration Database files). The system software loads these files during the device boot sequence to apply the tuned settings permanently. Common Use Cases in Product Development Voice Quality Enhancement (VQE)

The tool provides access to Qualcomm's suite of proprietary audio enhancement algorithms, including: Devices must pass rigorous certification tests

QACT is deeply integrated with the ACDB. The ACDB is not a single file but a collection of parameter configurations stored in the device's firmware. These files are identified by unique IDs, each corresponding to a specific audio device or path.

The world of Linux kernel audio is seeing a significant shift with Qualcomm's contributions. In a series of patches throughout 2025, Qualcomm engineer Srinivas Kandagatla worked to improve the AudioReach driver in the mainline Linux kernel. These patches, such as [PATCH v2 0/6] ASoC: qcom: audioreach: cleanup and calibration , focused on several key areas that directly impact the calibration process:

QACT acts as a control center for the entire audio subsystem of a device. It offers deep visibility into how sound is captured, processed, and reproduced. 1. Real-Time Parameter Tuning

Optimizing a device using QACT generally follows a structured engineering workflow: