Sound-devices 722 User Manual Page 34
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722 User Guide and Technical Information
32
v. 2.67 Features and specifications are subject to change. Visit www.sounddevices.com for the latest documentation.
Audio File Formats
The 722 records audio to the industry-standard Broadcast Wave file format, either monophonic or
polyphonic, MP2, MP3, or FLAC. Files created by the 722 receive the .WAV, .MP2, .MP3, .FLAC file
extensions. The 722 will read files with the .BWF extension.
.WAV
The 722 has two file type options for recording WAV files, mono and poly. Select the file type in the
Setup Menu option REC: FILE TYPE.
Monophonic
When WAV Mono is selected, the 722 will generate a separate audio file for each recorded track.
The mono files generated by the 722 have file names similar to T01_1.WAV and T01_2.WAV. The file
name suffixes, _1 and _2, identify the track number of the file.
Polyphonic
When WAV Poly is selected, the 722 will generate one audio file for each take. All recorded tracks are
interleaved into this single file.
Wave Agent Beta allows for the splitting (de-interleaving) of polyphonic files and combining (merging or
interleaving) of monophonic sibling files into a single polyphonic file. See Wave Agent Beta.
The 722 writes AES-31 Broadcast Wave formatted files. The audio files created by the 722 place ad-
ditional information in the file header, called the Broadcast Audio Extension data chunk. Software
that does not recognize this additional broadcast wave data chunk will simply ignore this added
information. Among the values recorded are:
• time code stamp
• time code frame rate
• date and time of the original recording
• bit depth
• sampling rate
• originating machine serial number
.FLAC
Free Lossless Audio Codec is a lossless data compression algorithm specifically designed for au-
dio. It is a convenient way to extend recording time with no effect on audio quality. It is suitable for
recording and archiving. FLAC, in particular, offers data compression rates that range anywhere
between 30% and 60%, depending on the audio program. Sound Devices Wave Agent Classic (www.
waveagent.com) is a free Windows based software used to extract FLAC to WAV as well as combin-
ing monophonic files and splitting polyphonic files.
What to consider when recording FLAC:
• notes are currently disabled, all other metadata is stored
• limits your sampling rate to 96 kHz
• limits recording to only one storage medium at a time
• The 7-Series can play back the recorded FLAC files.
• Use Sound Devices Wave Agent Classic software (www.waveagent.com) to extract Broadcast
Wave files from 7-Series recorded FLAC files.
• Auto save feature does not apply to FLAC files, if power is lost while recording the file maybe
invalid.
- firmware rev. 2.67 1
- Table of Contents 3
- Welcome 4
- 722 Firmware Known Issues 4
- Copyright Notice and Release 4
- Quick Start Guide 5
- Routing Inputs to Tracks 6
- Recording Parameter Setup 6
- FireWire File Transfer 7
- Front Panel Descriptions 8
- Panel Lock 10
- LCD Display Descriptions 11
- -), pin-4 14
- -) and pin-3 (+) are 14
- Back Panel Descriptions 15
- Input Setup and Control 16
- -6 dBFS 17
- Input Delay 18
- Digital Input – AES3 18
- Input-to-Track Routing 19
- Selective Input Muting 20
- Sampling Rate and Bit Depth 21
- Word Clock 22
- C. Link – Multi-Unit Linking 23
- Outputs – Analog and Digital 24
- Headphone Output 25
- MS Stereo Monitoring 26
- Rotary Switch Behavior 26
- Metering and Display 27
- Meter Ballistics 28
- Peak LEDs 29
- Tone Oscillator 29
- 24-Hour Time Counter 30
- Recording 31
- Pre-Record Buffer 32
- Failure During Recording 32
- Front Panel Lockout 32
- Record Pause 32
- Playback 33
- Audio File Formats 34
- Recording Time Calculation 36
- File Naming / Numbering 37
- Scene Name/Number 38
- Take Numbers 38
- Wave Agent Beta 39
- File Management 40
- File Viewer Navigation 41
- File Viewer Screen 41
- File Time and Date 42
- File Size Maximum 42
- Setting/Clearing Flag Bits 43
- Automatic Flag Clearing 43
- File Deletion 44
- False Take Control 44
- Take Number Incrementing 45
- Take List 45
- Take Status 45
- Formatting 47
- Drive Type 47
- Drive Replacement 48
- Drive Failure 48
- When to Use CF 49
- Testing 49
- Qualified CF Cards 50
- FireWire Bus Powering 51
- Qualified Drives 51
- DVD-RAM Drives 51
- File Transfer – FireWire 52
- Powering 53
- Time of Day Battery 54
- Power-up Messages 55
- Power Consumption Variables 55
- Firmware Upgrades 56
- Connecting the CL-1 57
- Keyboard Assignments 57
- Logic Inputs and Outputs 59
- Setup Menu Presets 60
- User Setups 62
- Setup Menu 63
- • VU only 66
- • Peak only 66
- • Peak-hold only 66
- • Peak+VU 66
- • Peak-hold + VU 66
- Setup Menu Shortcuts 68
- Front Panel Button Shortcuts 69
- Connector Pin Assignments 70
- Specications 71
- Accessories 73
- CE Declaration of Conformity 75
- Software License 76
- Limitation of Liability 77
- Warranty & Service 78
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