AudioTools Quality Control Server for PCM analyzes the audio content and uses unique modules to identify potential issues.
- AudioTools Audio Quality Analysis
- AudioTools Channel Assignment Detection
- AudioTools Program Correlation Check
While there are an unlimited number of potential problems that can be screened for in the analysis of audio content, the most critical issues for a broadcaster are clicks and crackle, and silence. The AudioTools Quality Analysis module uses a series of algorithms to analyze incoming PCM audio content and detects anomalies such as clicks and silence. Parameters may be specified to control the algorithm processing, and each algorithm may be enabled or disabled. The output log indicates the types of anomalies found and the time code locations where they occurred.
How can you determine whether the channel assignments indicated in your database records and metadata accurately reflect the content’s actual channel configuration? The AudioTools Channel Assignment Detection module determines channel locations within multi-channel programs by evaluating relative loudness levels, channel correlations, and frequency range on a representative section of the audio. The module then algorithmically identifies likely channel pairs; front, rear, center, and LFE, extending the sample range until the desired level of confidence for each assignment is reached.
Multiplatform and multi-device broadcasting require that the same content is generated and handled in a number of formats. This can be a simple 5.1 + 2 configuration or a large number of content-wise identical files for web, mobile and other devices and platforms. How do you know that there is indeed the same content in those files, from start to end?
The AudioTools Program Correlation module performs a correlation check between two audio programs and is used to determine whether both represent the same content. An initial alignment step is performed to account for small differences in the start of each program. The number of channels in each program may hereby range from 1 to 8.
These modules can be used separately or as part of a complex and conditional ingest or QC process, in combination with other AudioTools modules or integrated with 3rd party QC or workflow platforms
AudioTools Server is the de facto standard in the EU for automated file-based loudness control and QC. Some of our happy AudioTools customers who have addressed their automated audio processing workflows include: