You can record action cam videos with sound by using a camera that has a built-in microphone or by attaching an external microphone to the camera. Make sure the microphone is positioned in a way that it can capture clear audio while you are recording. Additionally, you can also use a separate audio recording device to capture sound and then sync it with the video during the editing process. It's important to test the audio setup before recording to ensure that the sound quality is clear and free from any unwanted noise. **

An unsellable sample plate of a vinyl record is a test pressing or a promotional copy of a record that is not intended for sale to the public. These sample plates are often used for quality control purposes or to promote the upcoming release of a record. They are typically marked as "not for sale" and may have different packaging or labeling than the final retail version. These sample plates are usually kept by the record label, artists, or used for promotional purposes, and are not meant to be sold to consumers. **

Yes, this sample is incorrect. The sample provided is not a complete sentence and lacks clarity. It does not provide enough information or context to understand the situation fully. A correct sample would need to be more specific and detailed to effectively address the question or issue at hand. **

A comparison sample is a group of individuals who are similar to the person being assessed, such as individuals with similar demographics or characteristics. This sample is used to compare the individual's performance or characteristics to those of a similar group. On the other hand, a norm sample is a representative group of individuals from the general population, used to establish average performance or characteristics for a particular measure or assessment. The norm sample provides a standard against which an individual's performance or characteristics can be compared. In summary, a comparison sample is specific to the individual being assessed, while a norm sample represents the general population. **

A blind sample is a sample that is tested without the tester knowing the identity or characteristics of the sample. This is done to eliminate bias and ensure the accuracy of the test results. On the other hand, a reference sample is a known sample that is used as a standard for comparison in a test or analysis. It provides a baseline for comparison and helps to ensure the accuracy and reliability of the test results. **

An ejaculation sample is a sample of semen that is collected from a male through ejaculation. It is typically used for fertility testing, sperm analysis, and assisted reproductive techniques such as in vitro fertilization. The sample is examined to assess the quantity, quality, and motility of the sperm, as well as to check for any abnormalities or potential fertility issues. **

A control sample is a sample that is used as a standard of comparison in an experiment. It is a sample that is not exposed to the experimental treatment or variable being tested. By comparing the results of the control sample to the experimental sample, researchers can determine the effect of the treatment being studied. Control samples help ensure that any observed changes are due to the treatment being tested and not to other factors. **

A point sample is a type of sampling method where data is collected at specific individual points or locations within a larger area or population. This method involves selecting and analyzing data from a single point or location to represent the characteristics of the entire area. Point samples are commonly used in environmental studies, such as measuring air quality at specific locations or collecting water samples from individual points in a river. **