A microphone pickup pattern—also called a polar pattern—shows how sensitive a microphone is to sound arriving from different directions. It helps a buyer predict what the microphone will capture, what it will reduce, and how it should be positioned relative to talkers, instruments, loudspeakers, stage monitors, and room noise.
For a B2B buyer, “cardioid” or “omnidirectional” should not be treated as a complete performance specification. The named pattern is the starting point. You should also examine the polar plot at several frequencies, listen to off-axis sound, verify the intended working distance, and test the microphone in a layout that represents the final installation.
What does a pickup pattern show?
A polar pattern is a circular graph of relative microphone sensitivity around the capsule. The microphone is placed at the center. The front, or on-axis direction, is normally shown at 0°. Angles around the circle represent sound arriving from other directions, while distance from the center represents relative output.
The graph does not show a physical wall around the microphone. A directional microphone still receives off-axis sound; it simply produces less output from some angles, and that off-axis sound may have a different tonal balance. The plotted response is also a two-dimensional slice through a three-dimensional pickup field.
Manufacturer plots often contain separate curves for several frequencies. This matters because a microphone may follow its nominal pattern closely around the midrange but become wider, narrower, or less regular at low or high frequencies. Shure’s overview describes a polar plot as the variation in sensitivity through 360°, and current Sennheiser product specifications likewise publish multiple frequency traces rather than only a pattern name.
Common microphone pickup patterns
Omnidirectional
An omnidirectional microphone is intended to respond around the microphone rather than favoring one horizontal direction. It can sound natural and can cover people or sound sources around a table, but it offers little directional help for separating one talker from another or rejecting a nearby loudspeaker.
- Useful for: round-table pickup, measurement, ambience, certain lavalier applications, and acoustically controlled spaces.
- Buyer concern: room noise, reverberation, loudspeaker proximity, and feedback risk may dominate the result.
- Verify: consistency across frequency, handling or mounting noise, working distance, and the actual room layout.
Cardioid
Cardioid is a common unidirectional pattern with strongest pickup at the front and greatest rejection toward the rear. Its broader front area can accommodate normal presenter or vocalist movement more easily than tighter patterns. It is widely used for handheld vocals, instruments, podiums, and general sound reinforcement.
- Useful for: general live vocals, karaoke, presentation microphones, instruments, and installations where rear rejection is useful.
- Buyer concern: rear ports can be covered by a hand, clip, foam, or bodywork, changing the intended response.
- Verify: rear rejection at relevant frequencies, handling position, off-axis coloration, and the placement of monitor loudspeakers.
Supercardioid
Supercardioid narrows the main front pickup area and reduces more sound from the sides than cardioid, but it has a small rear lobe. According to Shure’s technical guidance, a typical supercardioid is least sensitive around 125° rather than directly behind the microphone. That changes how stage wedges and nearby loudspeakers should be positioned.
- Useful for: louder stages, closely spaced vocalists or instruments, and applications requiring more lateral separation.
- Buyer concern: a presenter or singer moving off-axis can create larger level or tonal changes, and a loudspeaker directly behind the microphone may feed the rear lobe.
- Verify: null angles, rear-lobe level, expected user movement, and monitor position.
Hypercardioid
Hypercardioid is tighter at the front than supercardioid and has a larger rear lobe. Shure identifies the typical minimum-sensitivity angle at about 110°. It can provide strong side rejection, but careful aiming and stable microphone technique are important.
- Useful for: controlled close pickup in noisy environments and applications where side rejection is more important than direct-rear rejection.
- Buyer concern: the specification can look attractive while the rear lobe conflicts with the real loudspeaker or noise layout.
- Verify: the complete polar plot, not only the front pickup angle.
Bidirectional or figure-8
A figure-8 microphone responds at the front and rear while rejecting sound from the sides. It is used for two opposing sources, certain interview arrangements, ribbon microphones, and stereo recording techniques. It is less common for ordinary handheld sound reinforcement because rear pickup may be undesirable.
- Useful for: face-to-face interviews, selected studio techniques, and applications that intentionally need front-and-back pickup.
- Buyer concern: the rear source and room reflections are captured deliberately, not accidentally removed.
- Verify: side rejection, front-to-rear tonal consistency, proximity effect, and mechanical orientation.
Lobar or shotgun
A shotgun microphone commonly combines a directional capsule with an interference tube to create a narrow forward response at higher frequencies. Its polar behavior changes with frequency, and reflections can affect off-axis sound. “Shotgun” should not be interpreted as unlimited reach: distance, room acoustics, source level, mounting, wind protection, and self-noise still matter.
- Useful for: video, broadcast, education, and other situations where the microphone must remain outside the frame or farther from the source.
- Buyer concern: indoor reflective rooms may produce colored off-axis pickup, while a narrow high-frequency plot may imply more isolation than the lower-frequency behavior delivers.
- Verify: plots at multiple frequencies, expected distance, indoor and outdoor use, wind protection, mounting noise, and complete audio specifications.
Pickup pattern comparison for project buyers
| Pattern | Primary strength | Main trade-off | Typical B2B use |
|---|---|---|---|
| Omnidirectional | Broad, natural coverage | Little directional isolation | Round tables, lavaliers, measurement, ambience |
| Cardioid | Useful rear rejection with forgiving front coverage | More side pickup than tighter patterns | Handheld vocals, karaoke, instruments, presentations |
| Supercardioid | Stronger side rejection | Small rear lobe and tighter aiming | Loud stages, closely spaced sources, goosenecks |
| Hypercardioid | Very focused front pickup and side rejection | Larger rear lobe and demanding technique | Controlled close pickup in noisy layouts |
| Figure-8 | Front-and-rear pickup with side nulls | Rear sound is intentionally captured | Interviews and specialist studio work |
| Lobar/shotgun | Narrow forward pickup, especially at higher frequencies | Frequency-dependent pattern and reflection sensitivity | Video, broadcast, lecture capture |
How should a buyer choose the right pickup pattern?
Start with the acoustic and loudspeaker layout, not with a pattern name. Map the wanted source, unwanted sources, user movement, microphone distance, reflective surfaces, and every nearby loudspeaker. Then choose a pattern whose useful area and nulls can be aimed in that layout.
Live vocals, karaoke, and rental stages
Cardioid is often a practical baseline because its front coverage tolerates normal movement and its deepest rejection is commonly behind the microphone. Supercardioid may improve separation on a loud stage, but it requires a different monitor layout because of the rear lobe. A tighter pattern does not automatically guarantee more gain before feedback; loudspeaker response, room acoustics, frequency-dependent directivity, equalization, and physical placement all contribute.
Conference rooms and installed speech
An omni boundary or table microphone may cover several people, while cardioid or supercardioid units can help separate seats and reduce nearby noise. The best choice depends on talker distance, table shape, ceiling loudspeakers, video framing, room reflections, automatic mixing, and how consistently users face the microphone. Specify the seating and loudspeaker plan in the RFQ.
Education, worship, and presentation systems
For a fixed lectern, cardioid or supercardioid goosenecks may be suitable when the talker remains within the designed working area. For a presenter who moves freely, a headworn or lavalier solution may keep the capsule-to-mouth distance more consistent. Pattern selection should be evaluated together with placement, mounting, cable or wireless requirements, and loudspeaker location.
Studio, broadcast, and content production
Studios may deliberately select omni for room sound, figure-8 for front-and-back pickup or stereo techniques, cardioid for general isolation, and shotgun microphones for camera-related work. In these applications, off-axis tone and proximity effect can be as important as nominal rejection.
Four common buying mistakes
- Treating “cardioid” as a complete specification. Two cardioid microphones can differ in front width, rear rejection, frequency consistency, off-axis tone, handling noise, and working distance.
- Assuming a tighter pattern always means less feedback. The loudspeaker must sit near a useful null, and the complete electroacoustic system still determines stability.
- Reading only the 1 kHz curve. Speech, music, feedback, and room noise cover a broad frequency range. Request polar plots with multiple frequency traces.
- Testing in an unrealistically quiet room. A microphone intended for a stage, meeting room, school, or rental inventory should be tested in a representative layout and noise condition.
What should you request from a microphone supplier?
For OEM, ODM, wholesale, or project purchasing, ask the supplier to identify the capsule or microphone-head configuration behind the quoted model and provide controlled documentation. A useful technical package may include:
- the named pickup pattern and microphone orientation;
- a polar plot with angle labels, dB scale, and curves at multiple frequencies;
- frequency response, sensitivity, maximum SPL, self-noise where applicable, impedance, and power requirements;
- the test distance and measurement conditions used for the published data;
- recommended speaking or instrument distance;
- guidance for stage-monitor or installed-loudspeaker placement;
- information about proximity effect and off-axis response;
- sample consistency and production quality-control method;
- documentation revision number and the exact model or capsule covered;
- confirmation of any OEM change that could affect acoustics, including grille, windscreen, capsule mounting, vents, housing, or DSP.
If the polar chart is a generic illustration rather than measured data for the quoted model, label it as such in your comparison. Do not assume that two microphones using the same pattern icon will behave identically.
A practical sample test for procurement
A full acoustic laboratory can quantify directivity more precisely, but a structured project sample test can reveal whether the microphone fits the intended use. Keep gain, distance, loudspeaker position, room, interface, and recording settings controlled when comparing samples.
- Confirm the front axis. Mark the microphone orientation and verify that all samples are mounted consistently.
- Record the wanted source on-axis. Use the expected talker or instrument distance and note the resulting level and tone.
- Move the source around the microphone. Compare front, sides, rear, and the supplier’s stated null angles without changing distance.
- Repeat with different content. Use speech plus broadband noise or program material so frequency-dependent changes are easier to hear.
- Check proximity effect. For directional microphones, compare several realistic distances and listen for low-frequency change.
- Recreate the loudspeaker layout. Put the monitor or installed loudspeaker where it will be used and raise system gain carefully under an engineer’s supervision.
- Check handling and mounting. Hold, clip, or install the microphone as the end user will; make sure vents are not blocked.
- Compare multiple units. Test samples from more than one unit or batch when consistency matters to the project.
- Record the evidence. Save model numbers, sample serials, test positions, audio files, settings, and pass/fail criteria for supplier discussion.
Pickup pattern questions to include in an RFQ
- What is the intended application: stage, karaoke, conference, education, worship, broadcast, studio, or rental?
- Where are the talker or instrument, microphone, noise sources, and loudspeakers located?
- What working distance and user movement must the microphone tolerate?
- Which pickup pattern is required, and why does it suit the system layout?
- Can the supplier provide model-specific polar plots at multiple frequencies?
- What rear-lobe or null-angle behavior must the installer account for?
- Is the pattern fixed, switchable, capsule-dependent, or created with DSP?
- Which grille, windscreen, mount, capsule, and housing are included in the quoted configuration?
- What sample test and acceptance criteria will be used?
- What estimated quantity, OEM requirements, destination country, schedule, and required compliance documents apply?
Pickup pattern and wireless performance are different specifications
The pickup pattern describes the acoustic directionality of the microphone capsule. It does not describe radio-frequency reception, wireless coverage, tuning range, interference resistance, latency, or diversity architecture. A wireless microphone buyer should evaluate both sides separately. For the RF side, see our guide to true diversity wireless microphone systems.
How EP AudioSource can support a sourcing project
EP AudioSource is an independently operated B2B sourcing and coordination service based in Enping, China. We can help overseas buyers clarify microphone requirements, identify potentially suitable professional-audio manufacturers, coordinate quotations and samples, communicate OEM or ODM needs, and follow sourcing projects. Product specifications, test results, compliance, pricing, production, warranty, and commercial terms remain subject to the selected manufacturer and agreement.
Before contacting suppliers, you may also review our guide to sourcing professional audio equipment from Enping and the current manufacturer directory. If you need samples for a defined project, use the sample request page. For a qualified inquiry, contact EP AudioSource with the destination country, application, layout, microphone type, estimated quantity, target schedule, OEM requirements, and the documents you need.
