![]() ![]() Expert Sleepers ES-9 DC-coupled audio interface in a 4ms Pod34X enclosure In the case of the Expert Sleepers ES-9, which we tested, DC-coupling was not enabled by default. All devices offer configuration software with which DC-coupling can be turned on or off. The ES-8 and ES-9 rely on the standard USB Audio Class drivers, so they can be used with your iPhone or iPad, as well as your Mac. At the present time, we are aware of 3 audio interfaces that do: the Expert Sleepers ES-8 and ES-9 Eurorack modules and Antelope Audio’s Orion Studio Synergy Core. The number of audio interfaces with DC-coupled output channels seems to have been growing for some time, although very few interfaces offer DC-coupled inputs. It unlocks all tools and features of the SoundMeter Pro subscription in SoundMeter X and all tools and features of the Pro Tool Set subscription in SignalScope X (iCloud login required).Learn more about SoundMeter X at Terms:- Policy:- and Conditions for FaberAcoustical.With the release of version 11.4 of SignalScope X, you can more easily analyze and generate signals with DC content, as long as you have compatible hardware with DC-coupled input and/or output channels. Data can be logged as often as every 0.1 seconds for up to 8 hours, every second for up to 72 hours, or every 10 seconds for up to two weeks.- Multi-channel Data Recorder - Supports up to 8 channels - Live monitoring of recorded data - Metadata (including calibrated sensitivity) embedded in audio file (AIF, CAF, WAV), optionally saved in separate data file- Stereo Signal Generator - Left and right outputs assigned to arbitrary hardware output channels - Random and pseudorandom (periodic) noise sequences with white or pink spectrum - Linear and logarithmic frequency sweeps - Dual periodic waveforms with arbitrary frequency and phase differenceThe Pro Tool Set subscription can be shared between SoundMeter X and SignalScope X. Data can be logged as often as every 0.1 seconds for up to 8 hours, every second for up to 72 hours, or every 10 seconds for up to two weeks.- Real-time Octave Spectrum Analyzer (RTA) - Lp, Leq, Lx sound levels - Supports whole or 1/3-octave frequency bands - Standard Flat, A, C frequency weighting - Standard Fast, Slow, Impulse time weighting - NC, RNC, and NR references curves, NC, SIL, and NR values - Data logging. Store user-defined thresholds in files for later recall.- Noise Dosimeter - 8-hour Noise Dose, Projected Dose, TWA calculations - Criterion Levels: 80, 85, 90 dB - Exchange Rates: 3, 4, 5 dB - Data logging. Define lower (warning) and higher (limit) sound level thresholds for overall (full audio band) levels as well as for individual octave frequency bands. Event notifications- Max Levels Meter - Traffic-light-style meters make it easy to monitor 2 separate sound level thresholds in 2 independent user-defined frequency bands. Data can be logged as often as every 0.1 seconds for up to 8 hours, every second for up to 72 hours, or every 10 seconds for up to two weeks. Additional tools and features are offered via auto-renewable subscriptions.The SoundMeter Pro subscription includes:- User-defined custom metadata in saved audio and data files- Level MeterLp, Leq, Lx sound levels - Standard Flat, A, C frequency weighting - Standard Fast, Slow, Impulse time weighting - Data logging. microphones.In addition to real-time sound level measurements, SoundMeter can stream raw sound data to audio files, and store acquired sound level data, including date, time, and location, in CSV or TXT (tab-delimited) files, MAT-files, or high-resolution PDF images for later retrieval from your device.SoundMeter may be downloaded for free from the App Store. Direct hardware support (automatic sensitivity calibration, based on factory-defined values) for The Modal Shop’s 2-channel 485B39 USB-ICP interface and miniDSP’s UMIK-1, UMIK-2, and E.A.R.S. Sensitivity calibration can also be performed for any audio input device and/or input channel. SoundMeter X turns your iPhone or iPad into a handheld data-logging sound level meter (SLM), data-logging noise dosimeter, stereo signal generator, multi-channel data recorder, and real-time whole or 1/3 octave band spectrum analyzer (subscription required for most features-try it out with a 14-day free trial).Input signals can be acquired from the current (manually selectable) audio input path.
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