 
 <prompt> Wetin be di period wey dem mention second to last for di text wey dey above? Based on di previous question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context:

Di text wey dey above na question wey dey ask about di period wey dem mention second to last. For example, if dem dey talk about history, e fit be say dem mention Stone Age, Iron Age, Middle Ages, Renaissance, Enlightenment, Industrial Revolution, World War I, World War II, Cold War, and so on. E fit also be say dem dey talk about music and dem mention Baroque period, Classical period, Romantic period, and Modern period. E fit even be say dem dey talk about technology and dem mention Industrial Revolution, Information Age, Digital Age, and so on. Na so e be for di text wey dey above. Abeg translate am go Nigerian pidgin. If e get programming code inside am, leave am as e be. Don't add any extra statement for your response. <response>: Eventually, wen e dey common for electric recordings to dey play back electrically for di 1930s and 1940s, di overall tone bin dey like as you dey listen to radio for dat time. Magnetic pickups come dey common well well and dem dey better designed as time dey go, wey make am possible to improve di damping of spurious resonances. Crystal pickups sef show face as lower cost alternatives. Di dynamic or moving coil microphone show face around 1930 and di velocity or ribbon microphone for 1932. Both of dem high quality microphones come dey everywhere for motion picture, radio, recording, and public address applications. 