Audio Analysis

Audiofile-Inspector

The well-known Audiofile-Inspector from the QUADRIGA Archive Solution is now available for DOBBIN.

Audio files are checked with regards to their properties e.g. start and end of the modulation, average amplitude, average dynamics as well as audio errors that have been taken over from the analog domain. These errors include clicks, hum, clips, drop-outs etc.

The algorithms for the determination of the properties, as well as the recognition of errors, can be switched on or off. The sensitivity can be adapted with various parameters.

The user can differentiate between the output values of the algorithms in the following ways: errors and unique properties such as start of the modulation or the beginning of a segment that contains hum are described as Events. Signal properties that relate to the whole file e.g. average volume are described as Means. The recognized Events are saved as technical metadata within the Broadcast Wave File (BWF). In addition, the Events are exported as an XML file.

Features:

• Modulation, Pauses and Critical Sections
• Clicks and Crackles
• Buzz
• Noise floor
• Direct Current Transmission
• Maximum Level
• Azimuth
• Correlation
• Stereo /Mono
• Analog Dropout
• Speech / Music recognition
• Bandwidth
• Dynamic
• Average Level
• Balance

Digital Error Checker

The Digital Error Checker FPU (File Processing Unit) is used to check audio files for digital errors. Recognized errors are saved in the BWF structure of the analyzed files and are exported as an XML file.

• block repetition
• digital clicks
• digital clipping
• hold errors
• sample repetition
• zero positions

MediaInfo

The MediaInfo FPU provides a vast array of information for lots of different audio, video and container file formats. This information can be directly be used to define processing rules in the Decider, allowing format dependent workflow chains. The XML files in your Dobbin Output folder of a MediaInfo Job can then be viewed with your web browser.

Supported Formats of the MediaInfo FPU:

• AAC (aac)
• AC3 (ac3)
• Amiga IFF/SVX8/SV16 (iff)
• Apple/SGI (aiff/aifc)
• Audio Visual Research (avr)
• Berkeley/IRCAM/CARL (irca)
• CDXA, like Video-CD (dat)
• DTS (dts)
• DVD-Video (ifo)
• Ensoniq PARIS (paf)
• FastTracker2 Extended (xi)
• Flac (flac)
• Matlab (mat)
• Matroska (mkv/mka/mks)
• Midi Sample dump Format (sds)
• Monkey's Audio (ape/mac)
• Mpeg 1&2 container (mpeg/mpg/vob)
• Mpeg 4 container (mp4)
• Mpeg audio specific (mp2/mp3)
• Mpeg video specific (mpgv/mpv/m1v/m2v)
• Ogg (ogg/ogm)
• Portable Voice format (pvf)
• Quicktime (qt/mov)
• Real (rm/rmvb/ra)
• Riff (avi/wav)
• Sound Designer 2 (sd2)
• SoundFoundry WAVE 64 (w64)
• Sun/NeXT (au)
• Windows Media (asf/wma/wmv)