We would advise to:
- Move the microphone closer to the desired sound source, since omnidirectional microphones pick up sound from all directions.
- Disable all enhancements: Open the Control Panel and click on Sound. Select the Recording tab, right-click your microphone, and select Properties. Select the Enhancements tab, disable all enhancements, and click Apply.
- Turn off speakers and other electronics, if the echo is from picking up noises from speakers or interference from other electronics. Use a headset instead.
- Turn off other recording devices. Sometimes the problem stems from more than the microphone picking up sounds.

Please check the following:

• Microphone privacy settings: Check if the microphone allows apps to access the microphone
• Default device: Check if the microphone has been selected as the default sound input device on the computer
• Re-installation: Disconnect the microphone, restart the computer and reconnect the microphone (to another USB-port)
• Windows Update: Check if Windows is up-to-date via windowsupdate.com
• USB port: Update the USB-drivers by downloading and installing the latest USB-drivers of the website of the computer's manufacturer.

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If your Macbook doesn't have a separate microphone input, we advice you to connect the Mico microphone with the adapter to the USB-port.
Then press the Alt-key and speaker logo at the same time and set the USB-microphone as default device.

The pick-up pattern of a microphone is the sensitivity to sound relative to the direction or angle from which the sound arrives, or how well the microphone "picks up" the sound from different directions. The most common types are: Cardioid, Omnidirectional, Unidirectional, Bidirectional.

CARDIOID
The most commonly used pattern is most sensitive at 0° (the front) and least sensitive at 180° (the back). This isolates it from unwanted ambient sound. You can use this for most recording applications. It is easy to get a good signal as the cardioid pattern blends out a bad sounding room, a noisy fan in the background, etc.

OMNIDIRECTIONAL
The omnidirectional microphone has equal sensitivity at all angles. This means it picks up sound evenly from all directions. Therefore, the microphone need not be aimed in a certain direction. It will be especially useful in good sounding rooms.

UNIDIRECTIONAL
Unidirectional microphones are most sensitive to sound arriving from directly in front (at 0°) and less sensitive in other directions. This makes unidirectional microphones effective at isolating the desired sound from both unwanted sound and ambient noise.

BIDIRECTIONAL
A bidirectional microphone (with figure-8 pattern) picks up the sound from in front of the microphone (at 0°) and from the rear (at 180°), but not the side (at 90° and 270°). It can be beneficial in situations where you do not want a signal coming from a 90° angle to bleed into the microphone.