Sound-devices 722 User Manual Page 21
- Page / 80
- Table of contents
- BOOKMARKS
Rated. / 5. Based on customer reviews
722 User Guide and Technical Information
19
Sampling Rate and Bit Depth
When recording the 722 generates uncompressed PCM audio WAV files in the Broadcast Wave File
format at the user-selected sampling rate and bit depth. The 722 LCD calculates available recording
time based on the sampling rate, bit depth, number of tracks set for recording and the selected stor-
age media available capacity. See the Calculating Recording Time later in this guide to estimate record
time.
Sampling Rate
When a sampling rate is selected for recording, all tracks are recorded at the selected sampling
rate. Sampling rates are selected among common rates from 32 kHz to 192 kHz. Additionally,
non-standard sampling rates can be applied when the 722 is word clocked from an external source
(clock sources between 32 kHz and 192 kHz). When recording off-speed sampling rates files will be
stamped with the rate closest to an internally generated frequency.
Relationship Between Sampling Frequency and Audio Bandwidth
The sampling frequency is expressed in samples per second (in hertz) and defines the number of
times in a second that the analog audio signal has been measured. Sampling frequency determines
the audio bandwidth, or frequency response, that can be represented by the digital signal. A quick
estimate of the maximum bandwidth capable of being represented at a given sampling rate is maxi-
mum analog frequency = sampling frequency/2. Higher sampling frequencies allow for wider audio
bandwidth.
The 722 generates the following sampling rates:
• 32 kHz
• 44.1 kHz
• 47.952 kHz
• 47.952kF - file stamped at 48 kHz
• 48 kHz
• 48.048 kHz
• 48.048kF -file stamped at 48 kHz
• 88.2 kHz
• 96 kHz
• 96.096 kHz
• 96.096kF - file stamped at 96 kHz
• 176.4 kHz
• 192 kHz
Bit Depths
The 722 records at bit depths of either 16 or 24 bit. 24 bit recording provides greater dynamic range
and addition headroom for signal peaks relative to 16 bit recordings. 24 bit recording (versus 16 bit)
is a significant benefit for field production audio tracks.
Bit Depth = Available Dynamic Range
Bit depth defines the digital “word length” used to represent a given sample. Bit depth correlates to
the maximum dynamic range that can be represented by the digital signal. Larger bit depths accom-
modate more dynamic range. A quick estimate of maximum dynamic range capable of being rep-
resented by a given word length is dynamic range ~= no. of bits x 6 dB. Bit depth is an exponential
measure (exponent of 2), so as bit depth increases, the amount of data it represents increases expo-
nentially. The majority of field recording is done with 16-bit audio, therefore, each sample is rep-
resented by a digital word of 2^16 (65,536) possible values. 24-bit audio has a word length of 2^24
(16.7 million) possible values per sample.
- 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
Related products and manuals for Audio Sound-devices 722
Audio Sound-devices 744T User Manual
(90 pages)
(90 pages)
Audio Sound-devices MixPre-D User Manual
(18 pages)
(18 pages)
Audio Sound-devices 302 User Manual
(30 pages)
(30 pages)
Audio Sound-devices 788T User Manual
(180 pages)
(180 pages)
Audio Sound-devices 633 User Manual
(84 pages)
(84 pages)
Audio Sound-devices 552 User Manual
(60 pages)
(60 pages)
© 2020, manymanuals.com. All rights reserved. | 0.480 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comments to this Manuals