HEAD acoustics MDAQS：音频质量评估中的里程碑
MDAQS (Multi-Dimensional Audio Quality Score) is the world's first binaural perception-based software tool that replaces human evaluation with novel metrics in the audio device development process. This allows manufacturers to quickly and efficiently evaluate the audio quality of all types of playback devices, such as speakers, headphones, smart speakers, headsets, etc., in a scientific and quantifiable way.
MDAQS runs as an option in the test software ACQUA, the powerful speech and audio quality measurement and analysis software from HEAD acoustics.
Perception-based instrumental assessment
MDAQS builds on the extensive research into human perception and hearing models that HEAD acoustics has been working on since the company's beginnings, including modeling binaural processing and signal processing in the human ear.
HEAD acoustics has conducted numerous intensive listening tests with carefully selected, untrained listeners. These "naïve" listeners have evaluated a variety of different audio devices with music of various genres based on several parameters. The results of these extensive listening tests serve as the basis for developing the algorithms and the training of MDAQS.
The analysis and validation of the results show that the perception of the sound quality by normal users primarily depends on three quality dimensions:
- Timbre: How faithfully do the spectrum and temporal precision of the signal stay intact?
- Immersiveness: How well defined are the virtual sound sources in the room?
- Distortions: How "clean" does it sound?
These quality dimensions are sufficient to describe the overall audio quality. The MDAQS model will also be able to be refined with additional parameters depending on the application area. All parameters included by MDAQS provide a reliable, meaningful, and comparable overall assessment of audio quality.
MDAQS is a milestone in perception-based audio quality assessment. MDAQS accelerates the development process and enables more reliable and meaningful audio quality testing and benchmarking results.
It doesn't get any closer to reality
MDAQS uses binaural recordings - the best equivalent of real human perception and realistic acoustics - as input for the analysis. These binaural recordings succeed optimally with our new series of low-noise artificial heads. Combined with the modular labCORE hardware, they are ideal for sound recording and perfectly reproducing acoustic reality.
MDAQS uses this signal to calculate Mean Opinion Scores (MOS) for the perception-independent quality dimensions timbre (MOST), distortion (MOSD), and immersiveness (MOSI) and combines these values into an overall quality score. Therefore, this model can also be used to benchmark devices in an effortless and meaningful way.
Complete solution for optimal results
The comprehensive package of ACQUA and MDAQS, together with labCORE and an artificial head such as the HMS II.3, can easily replace previously used measurement hardware and software solutions. The interaction of the faithfully recorded sound signal and the unique MDAQS metrics models human perception so well that time-consuming and cost-intensive tests with test subjects become obsolete.
Learn more about HEAD acoustics' MDAQS and visit MDAQS - Instrumental Audio Quality Evaluation | HEAD acoustics!
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HEAD acoustics GmbH是全球领先的声音和振动分析解决方案供应商之一。我们在开发用于测量、分析和优化语音和音频质量的硬件和软件，以及客户订制解决方案和服务方面拥有专业的技术和开拓进取的精神，因此在电信领域获得全球认可。HEAD acoustics的服务范围涵盖技术产品的声音工程、环境噪声调研、语音质量工程、咨询、培训和技术支持。HEAD acoustics 位于亚琛附近，在中国、法国、印度、意大利、日本、韩国、英国、美国设有子公司，并在全球拥有众多销售合作伙伴。
