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Turn Your Echo Speakers into a Home Theater System: DIY Spatial-Audio Setup
CNET· 2026-03-21 12:00
If you want big sound from your TV, you're probably going to want separate speakers for it. A soundbar might be the most obvious way to beef up the audio on your TV, but it isn't the only way. Thanks to Amazon's Alexa Home Theater feature, you can build a wireless surround sound system with a few of these echo speakers.It can even automatically calibrate however many speakers you use, and wherever you put them to give you a spatial audio field, which is basically a fancy term for really precise surround sou ...
Hands-on experience with Spatial Audio for Apple Immersive Video | Meet with Apple
Apple Developer· 2025-12-10 00:01
Spatial Audio Design Principles - Immersive audio design should account for the entire visual frame, as viewers can explore different areas and focus on mini-stories within the scene [1][2][5][6] - Spatial audio should consider the sonic world behind the viewer, utilizing equirectangular representations to place sounds accurately in 360-degree space [7][8][9][10] - Headlocked stereo is suitable for elements like voiceover and narration, where the sound should remain constant relative to the viewer's ears, rather than being spatialized within the scene [12][13][14][15][42][43][44] DaVinci Resolve Fairlight Integration - DaVinci Resolve integrates editing, color correction, and Fairlight audio post-production, enabling a collaborative workflow without data exchange between pages [17][18] - Fairlight offers standard DAW tools, including faders, spatial panners (azimuth, elevation, Cartesian view), built-in EQ, dynamics processors (compressor, gate, limiter), and bus routing [18][19][20][21][22] - Fairlight supports ASAF (Apple Spatial Audio Format) master bus output, allowing for mixing in binaural, stereo, or speaker system configurations, optimized for the listening environment [23][24][25][26] - Buses can be set up in Fairlight to route audio signals to different destinations, including ambisonic formats for Apple Immersive Video [27][28] ASAF Workflow and Features - ASAF and ambisonics enable realistic positioning of sounds in the sound field, such as placing stereo sounds in the upper canopy of trees [37][38] - Headlocking in Fairlight can be achieved by routing a track to the main ASAF output, selecting the track, and enabling the headlocked option in the inspector [43] - DaVinci Resolve Fairlight's IntelliTrack, an AI-based tracker, automates complex pan moves by tracking objects in the video, saving time for audio engineers [52][53][54][55][56] Project Setup and Delivery - Apple Immersive Audio requires DaVinci Resolve Studio (the paid version) and enabling Apple Spatial Audio in the Video and Audio I/O preferences [57][58] - Final output for Vision Pro or master files can be delivered through the Deliver page, with options for Vision Pro Review or creating a master file bundle [58][59]
Meet the Apple Immersive Video format | Meet with Apple
Apple Developer· 2025-12-03 20:52
Apple Immersive Video (AIV) Key Features - AIV aims for perfect fidelity, targeting 20/20 vision (60 pixels per degree) and a field of view between 180 and 230 degrees [3][4][20] - AIV uses dynamic bespoke projection, eliminating the need for lat long conversion, saving production time and storage space [5][6] - AIV emphasizes world scale, using accurate lens calibration data (ELPD file, approximately 50kB) to avoid warping and stitching artifacts [7][8][9] AIV Technical Specifications and Workflow - AIV capture and playback occur at a minimum of 90 frames per second and 7200x7200 resolution per eye, resulting in a 44x increase in pixels compared to 4K [11][12] - AIV production format uses ProRes, uncompressed, or Raw, while delivery format uses a lightweight video track (MV-HEVC) and Apple Positional Audio Codec (APAC) [27][28][29] - AIV ecosystem is designed for simplicity, with all-in-one cameras, 2D-like editing workflows, and a streamlined encode and delivery pipeline [21][22] AIV Acuity and Delivery - AIV uses acuity (pixels per degree) as a key metric, targeting 60 pixels per degree to achieve a sense of presence [16][20] - AIV employs foveation, a special imaging process, and MV-HEVC tuned encoders to preserve acuity while reducing image sizes for efficient delivery (target delivery size of 4320x4320 per eye) [34][35][36][37][38] - AIV incorporates motion data into every shot, allowing creators to visualize camera motion in the timeline and use it as a story tool [39][40][41]