This audio test is in a DCP for 7.1 installations to allow evaluation of the sound quality of the system. The primary motivation was to have standardized test content to evaluate non-perf screens, but the content is just as good for testing all screen types. Its primarily goal is to provide reference material for designers of systems to test their systems. It can also be used to evaluate the performance of any screen.
The linked assets are DCPs of the test material – unencrypted.
Reference video (stereo only): https://assets.isdcf.com/ISDCF-Audio_TST_F_EN-en-EN-CCAP_OV_71_2K_EKN_20250128_stereo-mixdown.mov
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Below is a timeline of the test content with expectations.
Time (Seconds) | Time (Minutes) | Type | Expectations |
0 | 0.00 | Introduction | Confirm audio system operating. Confirm closed caption system working. |
18 | 0.30 | Center Localization Test | These sets of sounds – from spoken voice to claps to gunshots should all be located at the center of the screen. They should have the characteristics you would expect in tonal quality. No echos should be expected. |
68 | 1.13 | Soundstage Localization Test | These claps followed by male/female voices move the sounds across the front screen from the center to the edges. It exercises the center speaker and the front left/right speakers. We expect the sound quality to remain consistent as it moves across the screen – both in volume and in timbral quality. |
338 | 5.63 | Surround Localization Test | These claps exercise the surround speakers in the room. We expect each to come from the appropriate location and not have significant echo from the front screen. |
385 | 6.42 | Walkaround Center Image Test | These male/female voices are only in the center channel and give the listeners to move around the room to confirm that the voices only appear to come from the center of the screen. Our expectations is that the sound will always appear to be at the center. |
457 | 7.62 | Center Channel Timbre Tests | These piano samples only from the center channel. The timbre should be consistent from any location in the room. |
549 | 9.15 | Soundtrack Reproduction Tests | Introduction |
551 | 9.18 | Clip #1 – Ride to Town – Orchestra soundstage, effects panning and Multiple voices. This should sound natural and a full, rich auditorium | |
666 | 11.10 | Clip #2 – Council Meeting – Rich crowd, ambience, voice timbre. | |
705 | 11.75 | Clip # 3 – Captain Martin Speaks – Male voice timbre and center localization | |
765 | 12.75 | Clip #4 – Ambush in the Woods – Effects panning ambience. | |
852 | 14.20 | Clip #5 – Woman Speaks to Congregation – Female voice timbre and center localization | |
930 | 15.50 | End of Content |