![]() ![]() The samples use less space, making this codec more efficient. What makes AAC better than MP3?ĪAC is a better codec than MP3 because it takes more samples than an MP3 does, resulting in higher quality. This lossless technique can be combined with lossy techniques to increase transmission and storage efficiency. This can be used to reconstruct this part of the signal exactly the same as before. Instead, the codec figures out how many times the same sound component occurs and then saves that information as XYZ sound occurred ABC number of times. Typically handling of redundancy doesn't result in the loss of sound data. This technique is fine for transmission of audio information, but not storage, as storing with this technique would result in sound degradation every time the audio was decompressed for use. Difficult to hear sound includes anything that's a very high frequency and situations where a quiet sound occurs at the same time as a louder sound. ![]() AAC, like many other audio codecs, starts by dropping out any sound data that can't be heard by humans or which is difficult to hear. Irrelevant components in an audio signal are those which can't be heard by humans. What audio signal components are considered irrelevant? Removing redundancies in the audio signal.Discarding signal components that are deemed irrelevant.This codec uses two coding strategies to reduce the amount of data to represent audio. AAC-HE (or HE-AAC) is for streaming audio, typically for something like digital radio. It combines high enough quality audio with low enough latency to facilitate communication. There are two common versions of AAC: AAC-LD (Low Delay) which is also referred to as AAC-LC (Low Complexity) and AAC-HE (High Efficiency).ĪAC-LD/AAC-LC is used for two-way communication. It is the most commonly supported audio codec and is available in every major browser and device. This codec was designed to replace MP3 because it offers higher sound quality at the same bit rate. Interra is headquartered in Cupertino, CA.Full glossary AAC (advanced audio coding) What is advanced audio coding (AAC)?Īdvanced Audio Coding (AAC) is a commonly used lossy digital audio compression codec developed by MPEG (Moving Picture Experts Group). Interra's Digital Media solutions are led by Vega, a family of Audio/Video analyzers which accelerate media product development and Baton, a QC or Automated Verification System which ensures media content readiness. Interra Systems is a software products and services provider for Digital Media industry. ![]() As we continue to expand our offerings, we are pleased to leverage Vega analysis software to streamline and optimize our development and QA processes," said John Dixon, Processor Portfolio Marketing Manager at Freescale Semiconductor. "We chose Interra's Vega H264 analyzer for its in-depth comprehensive video analysis features, ease of use, and excellent customer support. "Interra's partnership with Freescale involved an active collaboration to ensure production-proven solutions for Freescale and cutting-edge features added to Vega SVC analyzer." "The rapid evolution of media standards and the complexities of implementing those media standards require customers to rely on industry standard analysis tools such as Vega to meet their Time-to-Market goals," said Ashish Basu, VP of Sales & Business Development at Interra. Some of the key features of Interra's SVC analyzer include frame-by-frame and block-by-block analysis, motion vector display, frame statistics, and thumbnail display of all layers. This significantly reduces the R&D and QA time and effort in delivering a standards compliant SVC codec. Interra's SVC analyzer enables engineers to navigate down to the deepest levels of an encoded stream along with a complete summary, analysis and debug information. With SVC, a video that is encoded just once can be used by a variety of clients by reconstructing it to suit their specific application. SVC (Scalable Video Encoding) standardizes the encoding of a bit stream that can contain multiple bit streams, each with different characteristics. Freescale is a long time user of Vega for developing media codecs supporting a number of video formats and was one of the driving forces behind the development of Scalable Video Coding analyzer. Interra Systems, Inc., the leading provider of Audio-Video Debug and Analysis Platform, today announced that Freescale Semiconductor, a leading embedded semiconductor systems provider, had developed its implementation of H.264/SVC using Interra's Vega Analyzer. Interra's Vega H264/SVC Analyzer for Advanced Media Codec Development Selected by Freescale Semiconductor ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |