Your voice is an individual possession. No one else has an instrument just like it. This is so because of its physical make-up and the way you use it. It is true also because it reflects your state of health and of mind. If you are ill and lacking in vitality, or if you have weak lungs and diseased vocal organs, the quality of your voice shows it. When you are excited, depressed, or frightened, your voice is very different from what it is when you are calm and happy. In addition, your voice oftentimes mirrors your temperament or personality. Aggressiveness, timidity, cheerfulness, seriousness, tranquility, or fretfulness beget different sounds.
Environment also plays a part, for we are influenced to a great extent by our associates and our surroundings. This is true not only of individuals but also of races. Characteristics of a language affect speech habits, and consequently voice quality. For example, the Italian language is characterized by its use of vowel sounds, and German by consonants.
Your ideal of tone is another factor. Weather you to learn how to sing in the church chior or on tv if your ear is uncritical and you do not differentiate good quality from poor, or if you are careless in the production of tone, your voice probably will not be pleasing. You may, perchance, be entirely unaware of the effect of your own voice. However, self-appraisal is desirable, indeed indispensable, for vocal improvement. Listen to yourself when speaking and singing. Is the quality pleasant? Is it musical? Listen to voices of others and learn to analyze the quality that makes them agreeable or displeasing.