The ASP supports scalar float and vector integer operations. CPU involvement in intra-frame processing and the synchronization/latency it might introduce is unnecessary. The ACP provides state management and scheduling of all other audio hardware components on the North Bridge. Playback of a typical audio graph is expected to use each of these processors extensively. This enables scenarios that include transfer without a sample-rate converter, transferring final mix channels, and CPU-based processing in the middle of a SHAPE-based audio graph. DMA: SHAPE has dedicated DMA hardware for transferring audio data to and from the unified memory space. The compressor has a hard-knee response, and supports both side chain and expander functionality.Ħ. The EQ is comprised of three serially cascaded biquad filters. EQ/CMP: A module providing up to 512 channels of 3-band equalization and dynamic range compression. It is used most commonly for distance and occlusion modeling.ĥ. The filter can provide low pass, high pass, band pass, or notch filtering, and exposes Q and cutoff/center frequency parameters.
DTS DECODER XBOX 360 WINDOWS
FLT/VOL: A module providing both volume scaling and a state variable filter implementation for more than 2,500 voices/mixes, analogous to the software-exposed XAudio2 per-voice filter available on Windows and Xbox 360.
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These mix buffers also provide coarse metering and clipping detection for debugging and monitoring.Ĥ. Mix Buffers: Dedicated accumulators for 128 in-place mix channels without needing to access memory, and with additional channels available virtually. SRC: A high-quality dedicated polyphase sample rate conversion block allowing for high performance and high-quality frequency resampling of 512 mono channels of audio data (whether for format conversion, Doppler effect, or pitch variation).ģ. XMA is a perceptual codec developed for Xbox 360 offering user-tunable quality and typically providing between 6:1 and 14:1 compression.Ģ. XMA Decoder: Concurrent decodes of 512 XMA format voices. SHAPE offers six fixed function blocks focused on common audio tasks:ġ. At 48 kHz, this represents a 2.67 ms audio frame, providing increased timing resolution and decreased latency compared with the Xbox 360 256 sample block size. SHAPE operates on blocks of 128 samples, where each sample supports 24-bit integer resolution (or 32-bit float when used by the CPU).
DTS DECODER XBOX 360 SOFTWARE
This hardware allows a developer to reduce CPU impact - even for high polyphony and complex-signal routings - and still provide the flexibility of SHAPE/CPU data interchange if a title chooses to perform custom digital signal processing, analysis, or software synthesis. It is designed to perform many of the basic operations commonly required on a per-voice basis. The core hardware dedicated to audio processing is SHAPE. SHAPE (Scalable Hardware Audio Processing Engine) The SHAPE (Scalable Hardware Audio Processing Engine) block comprises the majority of audio functionality, although the other processors also contribute significant features. Here you can see the hardware-accelerated audio components: The audio hardware components can address the entire unified memory space. In addition to general CPU power (which can be used for decoding, synthesis, rendering, and so on), Durango provides several hardware components dedicated to audio processing.
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The architecture also provides a shared resource model for software processing consumption, allowing each individual title to select what and how much custom signal manipulation to apply in CPU utilization. It provides hardware-accelerated pathways for the most common aspects of audio rendering-compression, mixing, filtering, and so on-on a large number of concurrent voices. Xbox One (Durango) audio architecture seeks a balance between the successes and tradeoffs of previous generation platforms while anticipating the increasing technical needs of next-generation implementations.
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This article is intended to describe this important part inside the system.
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One of the few components that remain unveiled in Xbox One ( Durango) is the sound block.