Microphone: Frequency Response 20Hz-20kHz, Max SPL 130 dB

Component Specifications

Definition

A microphone is a precision acoustic-to-electrical transducer component that captures sound pressure variations and converts them into corresponding electrical voltage signals through various transduction principles (dynamic, condenser, piezoelectric, etc.). In industrial audio systems, it serves as the primary input device for sound acquisition, monitoring, and communication applications.

Working Principle

Operates on transduction principles: dynamic microphones use electromagnetic induction (coil moving in magnetic field), condenser microphones use variable capacitance (diaphragm as one plate of capacitor), and piezoelectric microphones use piezoelectric materials generating voltage when deformed by sound waves.

Materials

Diaphragm: Mylar, aluminum, gold-sputtered plastic; Housing: Aluminum alloy, ABS plastic, stainless steel; Internal components: Neodymium magnets (dynamic), FET transistors (condenser), brass contacts; Windscreen: Foam, metal mesh.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Max SPL	130 dB
Impedance	150-600 ohms
Sensitivity	-45 dBV/Pa
Polar Pattern	Cardioid/Omnidirectional
Frequency Response	20Hz-20kHz
Signal To Noise Ratio	70 dB

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

IEC 60268-4, ANSI/ASA S1.15

Parent Products

This component is used in the following industrial products

Audio system

Integrated electronic subsystem responsible for audio input and output in smartphones

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Engineering Analysis

Risks & Mitigation

Acoustic feedback
Moisture damage
Electromagnetic interference
Mechanical vibration damage
Dust contamination

FMEA Triads

Trigger: Diaphragm deformation due to excessive SPL
Failure: Distorted audio output
Mitigation: Implement SPL limiters and regular calibration

Trigger: Moisture ingress in housing
Failure: Electrical short circuit
Mitigation: Use IP67-rated sealed enclosures

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Frequency response ±3 dB, Sensitivity ±2 dB

Test Method

IEC 60268-4 measurement in anechoic chamber

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

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Manufacturers of Microphone

Manufacturer profiles associated with Microphone.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the difference between dynamic and condenser microphones in industrial applications?

Dynamic microphones are more durable and handle high sound pressure levels, ideal for noisy environments. Condenser microphones offer higher sensitivity and frequency response, suitable for precision monitoring applications.

How do you prevent microphone damage in harsh industrial environments?

Use protective windscreens, sealed housings (IP-rated), shock mounts, and regular cleaning to prevent dust, moisture, and mechanical damage.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Microphone