Handheld sound level meter

Whether for performance venues, architectural measurements, or work-place acoustics, reverberation time is a key parameter for characterizing a room. Reverberation time data provides information about the quality of sound as perceived by the audience in a room. A long reverberation time can make speech less intelligible, and music more pleasing. Too short a reverberation time can muffle speech and make a room sound “thin.”  Reverberation time sound level meter Larson Davis 831C-RT with Room Acoustics Firmware 831C-RA offers reverberation time measurement and calculation.

• Calculates reverberation time (RT60)
• Ensures measurement reliability with ensemble averaging
• Serves as pink and white noise source
• Supports optional amplifiers and omni-directional or façade speakers
• Triggers measurement automatically
• 1/1 and 1/3 octave filters supported
• Offers measurement quality indicators and grading.

Firearm noise sound level meter Larson Davis Spartan™ 821IH-QPR offering quantitative measurements of sound pressure levels generated by firearms with and without suppression devices and silencers.

• Measure up to 183 dB
• Class 1 Sound Level Meter
• 48 kHz sampling rate.

Expanding the capabilities of the SoundAdvisor™, Low noise sound level meter Larson Davis SoundAdvisor™ 831C-LOWN configuration is ideal for measurements where noise levels are extremely low, such as very quiet soundscapes and quiet machines.

• 10 Hz to 16 kHz frequency range
• Highly portable
• Low power (4 mA ICP)
• Single channel
• No external power supply required.

Whether making handheld noise measurements or measuring environmental noise for several weeks, the Multi-purpose environmental sound level meter Larson Davis SoundExpert® series 821 is an excellent choice for ease of use and low power operation.

• Removable preamplifier up to 200 ft (60 m)
• Large, responsive touch display
• Long battery life – up to 40 hours
• Optional 1/1 and 1/3 octave band analysis available
• Class 2 meters available as Model 721ENV and Model 721ENV-D.

Occupational noise sound level meter Larson Davis Spartan™ series 821 offer the tools needed to evaluate noise in the workplace.

From the intuitive responsive touch screen interface to built-in workplace noise dose metrics to optional Octave Band Analysis features

Spartan™ Series Sound Level Meters make workplace noise surveys and noise dose measurements accessible.

• Job-based Noise Measurements
• Site Surveys
• Plant Sound Maps
• Noise Dose Measurements
• Long battery life
• Wireless charging
• Automatic data transfer
• Built-in noise dose metrics.

Sound level meter Larson Davis SoundAdvisor™ 831C performs the functions of several instruments by combining the features of a precision Class 1 sound level meter, environmental noise analyzer, and a real-time frequency analyzer in one unit.

From app-based compatibility with LD Atlas™ to instant alert capabilities, Sound meter Larson Davis SoundAdvisor™ 831C is an ideal solution for a range of applications including environmental noise assessment, spectral noise analysis, reverberation time measurements, event detection, sound recording, and more.

• Environmental noise assessment
• Noise reduction validation
• Product quality control
• Spectral noise analysis
• FFT analysis and tone assessment
• In-situ sound power measurements
• Code enforcement.