![]() Several acoustic improvements can be made in a typical rectangular room whereĪn audio monitoring setup is installed. ![]() Reflection-free zone around the listening area: One aim of control room design is to reduce or eliminate early reflections, having mainly the direct sound from the monitors reaching the listening area. Reflections arriving very soon after the direct sound from the monitor are called early reflections. Control room design minimises the first order reflection level reaching the listening area. Diffusion is usually not effective at low frequencies.Ī combination of diffusive and absorptive surfaces can be very effective in reducing the audibility of reflections.įirst order reflections can be high level while subsequent reflections become Spreading angle depends on the diffusor design. Thick layer of porous materials are needed to absorb lower frequencies. Soft materials such as rock/mineral wool, sofas, heavy curtains or thick carpets absorb sound energy. ![]() Hard surfaces such as glass, concrete, dry wall or MDF reflect sound. Wall surfaces, ceilings and floors can be reflective, diffusive or absorptive. However, using services of a professional consultant is highly recommended. Several room acoustic improvements are suggested here. Audio production rooms are designed for monitoring and should receive adequate acoustic treatments to allow quality monitoring. ![]() Monitor calibration alone helps but may not be sufficient to resolve room acoustic problems. The signals available include individual frequencies, sweep tone, pink noise and 85 Hz sinewave. In order to check the outcome of your calibration or acoustic treatment efforts by evaluating the low frequency reproduction in your audio system, you can download audio test signals here. If you’re using Classic models, be sure to adjust their rear-panel DIP switches for a neutral frequency response after placement in the room. Please note that GLM 3 can't control Classic Genelec monitors. The network adaptor connects to your Mac or PC via the supplied USB cable, and to your SAM monitors via an 5 metre Ethernet cable (which is supplied separately with each SAM monitor). To enable GLM software to integrate with your SAM monitors, you’ll also need the Genelec network adaptor kit (8300-601) which includes the GLM network adaptor, 8300A calibration microphone and microphone holder, 1.8 m USB cable and Quick Connection Guide. Genelec's own audio calibration software for Genelec SAM monitors, GLM, can be downloaded here. GLM calibration, which is available for SAM systems, will compensate for this effect automatically. Some Genelec monitors have a desktop control DIP switch compensating for this boost. Large table or mixing console in front of the monitors may cause a boost around 160-200 Hz. When a two-way monitor is placed horizontally, difference in the tweeter and woofer distances will cause reduction of sound level at the crossover frequency when the listener moves sideways from the acoustical axis. To achieve optimal sound reproduction we recommend placing two-way monitors vertically. In the example below, the bass tilt control has been used to compensate for a low frequency boost caused by a monitor close to a large wall. Then, adjust each level control so that all the monitors produce the same sound level at the listening position. Then analyse the measurement results and adjust tone control DIP switches to retrieve a flat and balanced frequency response for each monitor.įor level calibration, first set the rotary input sensitivity control on all monitors fully clockwise. First take a frequency response measurement. Ensure that monitors are at the correct distance and height. Analogue systems feature DIP switch tone controls while Smart Active Monitor (SAM) systems with digital signal processing can calibrate automatically with Genelec AutoCal.įirst set the measurement microphone at the ear height in the listening position (typical height is from 1.2 to 1.4 m). Example of compromised listening condition: excessive bass level in the monitoring room may result in a lack of bass in the final mix.Ĭalibration Utilising GLM and DIP switchesĪll Genelec active monitoring systems have room response adjustments to compensate for room influences and retrieve a flat frequency response at the listening position. Acoustic calibration minimises room influences and helps to retrieve flat and neutral frequency response.
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