Test Signals & Waveforms


APx Dolby Generator Waveforms: Dolby Digital 1.0 (19.55 MB)

The APx Dolby Generator Waveforms support the APx500 generator waveform feature. Copy the folders to your PC and browse to the desired file from the Generator Waveform browser inside the APx500 application.

Notes: These files are similar to the files of the same name and format available on the APx-BD1 Blu-ray disc. Some files have been shortened to accommodate the memory limitation for the generator waveform feature. A few files that could not be shortened have been omitted.




APx Dolby Generator Waveforms: Dolby Digital Plus 1.0 (22.37 MB)

The APx Dolby Generator Waveforms support the APx500 generator waveform feature. Copy the folders to your PC and browse to the desired file from the Generator Waveform browser inside the APx500 application.

Notes: These files are similar to the files of the same name and format available on the APx-BD1 Blu-ray disc. Some files have been shortened to accommodate the memory limitation for the generator waveform feature. A few files that could not be shortened have been omitted.

Download of this file is restricted to Dolby Licensees. If you are a Dolby licensee, please contact Audio Precision Technical Support supplying your Dolby License and AP web site login name to obtain download permissions.




APx Dolby Generator Waveforms: Dolby TrueHD 1.0 (288 MB)

The APx Dolby Generator Waveforms support the APx500 generator waveform feature. Copy the folders to your PC and browse to the desired file from the Generator Waveform browser inside the APx500 application.

Notes: These files are similar to the files of the same name and format available on the APx-BD1 Blu-ray disc. Some files have been shortened to accommodate the memory limitation for the generator waveform feature. A few files that could not be shortened have been omitted.

Download of this file is restricted to Dolby Licensees. If you are a Dolby licensee, please contact Audio Precision Technical Support supplying your Dolby License and AP web site login name to obtain download permissions.




APx DTS Generator Waveforms: DTS Digital Surround 1.0 (43.67 MB)

The APx DTS Generator Waveforms support the APx500 generator waveform feature and are encoded in the various DTS surround sound formats. Copy the folders to your PC and browse to the desired file from the Generator Waveform browser inside the APx500 application.

Notes: These files are similar to the files of the same name and format available on the APx-BD1 Blu-ray disc. Some files have been shortened to accommodate the memory limitation for the generator waveform feature. A few files that could not be shortened have been omitted.




APx DTS Generator Waveforms: DTS HD High Resolution 1.0 (0.00 KB)

The APx DTS Generator Waveforms support the APx500 generator waveform feature and are encoded in the various DTS surround sound formats. Copy the folders to your PC and browse to the desired file from the Generator Waveform browser inside the APx500 application.

Notes: These files are similar to the files of the same name and format available on the APx-BD1 Blu-ray disc. Some files have been shortened to accommodate the memory limitation for the generator waveform feature. A few files that could not be shortened have been omitted.




APx DTS Generator Waveforms: DTS HD Master Audio 1.0 (0.00 KB)

The APx DTS Generator Waveforms support the APx500 generator waveform feature and are encoded in the various DTS surround sound formats. Copy the folders to your PC and browse to the desired file from the Generator Waveform browser inside the APx500 application.

Notes: These files are similar to the files of the same name and format available on the APx-BD1 Blu-ray disc. Some files have been shortened to accommodate the memory limitation for the generator waveform feature. A few files that could not be shortened have been omitted.




APx FM MPX-RDS Waveforms 50 µs (except North America) 1.0 (0.00 KB)

APx FM MPX-RDS Waveforms 50µs (except North America) contains a series of FM multiplex and RDS encoded waveforms for FM radio receiver testing with the APx Series analyzers. The test streams are versions of the stereo .wav files that can be created with the Audio Precision Waveform Generator Utility (WfmGeneration.exe), also available for download.

Copy the folder to your PC and load the desired file using the generator waveform browser inside the APx500 application. Download Technote 105: FM Radio Receiver Testing with APx Audio Analyzers for a discussion on FM testing.




APx FM MPX-RDS Waveforms 75 µs (North America) 1.0 (0.00 KB)

APx FM MPX-RDS Waveforms 75µs (North America) contains a series of FM multiplex and RDS encoded waveforms for FM radio receiver testing with the APx Series analyzers. The test streams are versions of the stereo .wav files that can be created with the Audio Precision Waveform Generator Utility (WfmGeneration.exe), also available for download.

Copy the folder to your PC and load the desired file using the generator waveform browser inside the APx500 application. Download Technote 105: FM Radio Receiver Testing with APx Audio Analyzers for a discussion on FM testing.




APx Smartphone and Tablet Audio Test Signals 2.0 (0.00 KB)

A comprehensive set of audio test files at 8k, 16k, 44.1k, and 48k sample rates for testing smartphones and tablets. Accompanies
Technote 116: Testing Smartphones and Tablets, which is a separate download.

APx Smartphone and Tablet Video Test Files is also available.




APx Smartphone and Tablet Video Test Signals 3.0 (0.00 KB)

A comprehensive set of MP4 video files with audio encoded in AAC, Dolby Digital 2.0, Dolby Digital 5.1, and Dolby Digital Plus 5.1 formats. Accompanies
Technote 116: Testing Smartphones and Tablets, which is a separate download.

APx Smartphone and Tablet Audio Test Files is also available.




APx Test Signals on Disc Track List 3.0 (178.59 KB)

The full track listings for all APx test signal discs: APx-BD1, APx-DVD1, and APx-CD1. These discs may be ordered from Audio Precision.

Alternately, the linear test signals may be created using the APx Waveform Generator Utility (available as a download), and the Dolby and dts encoded versions may be downloaded as "APx Dolby Generator Waveforms" and "APx dts Generator Waveforms" respectively.




ATS-2 1 kHz Test Signal with DC Offset 1.0 (1.54 KB)

This signal accompanies the kb article "Generating Signals with a DC Component on the ATS-2." It contains a 1 kHz tone with a DC offset, for use with the arbitrary waveform generator feature.




HDMI Plug Fest audio test signals 3.0 (141.51 MB)

This compressed folder contains audio test signals required to do the most common tests for audio quality in several formats:

(1) Linear PCM .wav files at 44.1 kHz sample rate and 16 bits (sub-folder PCM_44_16)

(2) Linear PCM .wav files at 48 kHz sample rate and 24 bits (sub-folder PCM_48_24)

(3) Dolby Digital 5.1 encoded .ac3 files (sub-folder DD_5.1)

(4) Dolby Digital Plus 5.1 encoded .ec3 files (sub-folder DD+_5.1)

(5) dts Digital Surround 5.1 encoded .ds.dtshd files (sub-folder dts_5.1)

In order to test the audio quality of devices like set-top boxes, special audio test streams of known quality must be played from the set-top box into an audio analyzer. This usually requires that the audio streams be encoded into a format that can be streamed from the set-top box over HDMI,S/PDIF or TOSLINK. The audio test signals in this folder are provided for the convenience of set top box manufacturers who wish to test with Audio Precision at HDMI Plugfest. If you are a set top box manufacturer and you wish to test your device with Audio Precision at HDMI Plugfest, please arrange to have these audio test streams encoded and loaded onto your device before coming to Plugfest.




Low Frequency Triangle Waves 1.0 (64.56 KB)

Contains two triangle waves. Both are 24-bit with 16,384 samples and contain one cycle of a triangle wave. One has a frequency of 1.0 Hz and is sampled at 16.384 kHz. The other has a frequency of 2.926875 Hz and is sampled at 48 kHz. Designed to be loaded into the arbitrary waveform generator of the SYS-2722 analyzer.




PESQ Speech Waveforms 4.3 (5.2 MB)

This compressed file contains a copy of the PESQ speech waveforms installed with the APx500 audio measurement software. It is provided as a convenience for APx500 users who want the ability to download these files from the web.

Please note: performing PESQ measurements with an APx audio analyzer does require the PESQ Perceptual Audio Test (SW-PESQ) software option. More information on perceptual audio testing with APx.




Philips (OM&T) Audio Signals Disc 1 SBC429 Track List and Details 1.0 (228.76 KB)

Accompanies "Philips (OM&T) Audio Signals Disc 1 SBC429," sold by AP as part number DSK-PHI. The disc contains a collection of audio signals for testing CD players. This document includes a detailed discussion of every track on the disc. 17 pp